Disclosed herein are duplex stainless steel alloys comprising 40 wt %-60 wt % ferrite and 60 wt %-40 wt % austenite and methods of formation thereof, the alloys including or consisting essentially of
from 10 wt % to 20 wt % chromium (Cr);
from 6 wt % to 13 wt % molybdenum (Mo);
from 0.5 wt % to 6.5 wt % nickel (Ni);
from 2.25 wt % to 12 wt % manganese (Mn);
from 0.05 wt % to 5 wt % copper (Cu);
from 0.05 wt % to 0.4 wt % nitrogen (N);
from 0.05 wt % to 0.35 wt % carbon (C);
from 0.01 wt % to 3.5 wt % cobalt (Co);
less than 2 wt % silicon (Si);
less than 2 wt % tungsten (W); and
iron (Fe) balance.
The duplex stainless steel alloy may include cast or wrought steel, or it may be in powder form.
B22F 9/08 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau liquide par coulée, p.ex. à travers de petits orifices ou dans l'eau, par atomisation ou pulvérisation
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 1/18 - Durcissement; Trempe avec ou sans revenu ultérieur
Disclosed herein are duplex stainless steel alloys comprising 40 wt% – 60 wt% ferrite and 60 wt% – 40 wt% austenite and methods of formation thereof, the alloys including or consisting essentially of from 10 wt% to 20 wt% chromium (Cr); from 6 wt% to 13 wt% molybdenum (Mo); from 0.5 wt% to 6.5 wt% nickel (Ni); from 2.25 wt% to 12 wt% manganese (Mn); from 0.05 wt% to 5 wt% copper (Cu); from 0.05 wt% to 0.4 wt% nitrogen (N); from 0.05 wt% to 0.35 wt% carbon (C); from 0.01 wt% to 3.5 wt% cobalt (Co); less than 2 wt% silicon (Si); less than 2 wt% tungsten (W); and iron (Fe) balance. The duplex stainless steel alloy may include cast or wrought steel, or it may be in powder form.
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
3.
ARTICLES FABRICATED FROM COLD-WORKED AND CASE-HARDENED ESSENTIALLY CO-FREE STAINLESS STEEL ALLOYS AND METHODS OF FABRICATION THEREOF
A method for fabricating an article includes forming a billet consisting essentially of a stainless steel composition of
manganese 2.00 wt. %-24.00 wt. %
chromium 19.00 wt. %-30 wt. %
molybdenum 0.50 wt. %-4.0 wt. %
nitrogen 0.25 wt. %-1.10 wt. %
carbon ≤1 wt. %
phosphorus ≤0.03 wt. %
sulfur ≤1 wt. %
nickel <22 wt. %
cobalt <0.10 wt. %
silicon ≤1 wt. %
niobium ≤0.80 wt. %
oxygen ≤1 wt. %
copper ≤0.25 wt. %
balance iron.
The billet is annealed and cold worked to form an article. Without annealing of the article, the article is subsequently case hardened at a single case hardening temperature to form a surface layer on a top surface thereof. Articles formed with the indicated stainless steel composition with case hardened surface layers are also provided.
A method for fabricating an article includes forming a billet consisting essentially of a stainless steel composition of manganese 2.00 wt.% – 24.00 wt.% chromium 19.00 wt.% – 30 wt.% molybdenum 0.50 wt.% – 4.0 wt.% nitrogen 0.25 wt.% – 1.10 wt.% carbon ≤0.08 wt.% phosphorus ≤0.03 wt.% sulfur ≤0.01 wt.% nickel <22 wt.% cobalt <0.10 wt.% silicon ≤0.75 wt.% niobium ≤0.80 wt.% copper ≤0.25 wt.% balance iron. The billet is annealed and cold worked to form article. Without annealing of the article, the article is subsequently case hardened at a single temperature to form a surface layer on a top surface thereof. Articles formed with the indicated stainless steel composition with case hardened surface layers are also provided.
Closed-loop metal powder management methods for additive manufacturing. Virgin metal powder is provided in a closed powder container comprising at least one sensor, tracker, or optical device. The metal powder is transferred to an additive manufacturing system, a portion of a metal powder layer is consolidated, and excess metal powder is transferred from the additive manufacturing system to the powder container, a second powder container, or an internal powder container. Virgin metal powder or a second metal powder are added to the excess metal powder, a quality of the mixed powder is validated, the process is repeated at least once, and powder physical transfer data associated with at least one of the steps is collected and stored in a data repository. Powder material parameters may be measured and assessed, and may be also be stored in the data repository.
Closed-loop metal powder management methods for additive manufacturing. Virgin metal powder is provided in a closed powder container comprising at least one sensor, tracker, or optical device. The metal powder is transferred to an additive manufacturing system, a portion of a metal powder layer is consolidated, and excess metal powder is transferred from the additive manufacturing system to the powder container, a second powder container, or an internal powder container. Virgin metal powder or a second metal powder are added to the excess metal powder, a quality of the mixed powder is validated, the process is repeated at least once, and powder physical transfer data associated with at least one of the steps is collected and stored in a data repository. Powder material parameters may be measured and assessed, and may be also be stored in the data repository.
Closed-loop metal powder management methods for additive manufacturing. Virgin metal powder is provided in a closed powder container comprising at least one sensor, tracker, or optical device. The metal powder is transferred to an additive manufacturing system, a portion of a metal powder layer is consolidated, and excess metal powder is transferred from the additive manufacturing system to the powder container, a second powder container, or an internal powder container. Virgin metal powder or a second metal powder are added to the excess metal powder, a quality of the mixed powder is validated, the process is repeated at least once, and powder physical transfer data associated with at least one of the steps is collected and stored in a data repository. Powder material parameters may be measured and assessed, and may be also be stored in the data repository.
A method for producing an additively manufactured, graded composite transition joint (AM-GCTJ) (300) includes preparing a grating or lattice pattern (101) from a first alloy A (100); the grating or lattice pattern (101) includes pores (110) in the grating or lattice patterns (101). The grating pattern is built from a first end to a second end being denser on the first end than on second end, and gradually reduces density by increasing the pore size and/or reducing density of the grating or lattice pattern; adding a second alloy B (200) powder to the second end of grating or lattice pattern. The second alloy B (200) powder is filled towards the first end. A composite is formed of first alloy A (100) and second alloy B (200) powder in the AM-GCTJ (300). The composite is subjected to hot isotropic pressing (HIP) to densify the composite. The second alloy B (200) is graduated from the first end to the second end of AM-GCTJ (300).
B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
B22F 7/00 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage
B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés
B23K 35/02 - Baguettes, électrodes, matériaux ou environnements utilisés pour le brasage, le soudage ou le découpage caractérisés par des propriétés mécaniques, p.ex. par la forme
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
B22F 10/38 - Commande ou régulation des opérations pour obtenir des caractéristiques spécifiques du produit, p.ex. le lissage de la surface, la densité, la porosité ou des structures creuses
9.
STRONG, TOUGH, AND HARD STAINLESS STEEL AND ARTICLE MADE THEREFROM
An iron-base, fine-grained, martensitic stainless steel alloy is disclosed. The alloy is essentially free of delta ferrite and provides very high hardness and good corrosion resistance. The alloy consists essentially of the following composition in weight percent. The balance of the alloy is iron and the usual impurities. A composite article of manufacture is also disclosed that includes a case portion formed of the foregoing alloy.
A precipitation hardenable, martensitic stainless steel is disclosed. The alloy has the following broad composition in weight percent. Ni 10.5-12.5 Co 1.0-6.0 Mo 1.0-4.0 Ti 1.5-2.0 Cr 8.5-11.5 Al Up to 0.5 Mn 1.0 max. Si 0.75 max. B 0.01 max. The balance of the alloy is iron and the usual impurities found in commercial grades of precipitation hardenable martensitic stainless steels as known to those skilled in the state of the art in melting practice for such steels. A method of making parts from the alloy and an article of manufacture made from the alloy are also described.
A powder including a plurality of particulates, each particulate including a soft magnetic metallic core coated with a continuous dielectric coating having a thickness selected from a range of 100 nanometers to 100 micrometers. The particulates have a mean particle size selected from a range of 100 nanometers to 250 micrometers. Methods for forming the powder are disclosed. A soft magnetic composite component includes a soft magnetic material in a dielectric matrix, wherein (i) the soft magnetic material comprises a plurality of particulates comprising metallic cores, (ii) each metallic core is coated by a continuous dielectric coating covering >90% of a surface area of the metallic core, (iii) the metallic cores are electrically isolated from each other, and (iv) the dielectric coatings of adjacent metallic cores are consolidated together. Methods for formation of the soft magnetic component by additive manufacturing and hot isostatic pressing are disclosed.
B22F 1/02 - Traitement particulier des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre, d'améliorer leurs propriétés; Poudres métalliques en soi, p.ex. mélanges de particules de compositions différentes comportant un enrobage des particules
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
B33Y 80/00 - Produits obtenus par fabrication additive
C03C 10/00 - Verre dévitrifié ou vitrocéramiques, c. à d. verre ou céramiques ayant une phase cristalline dispersée dans la phase vitreuse et constituant au moins 50% en poids de la composition
H01F 1/24 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre comprimées, frittées ou agglomérées les particules étant isolées
12.
SOFT MAGNETIC COMPOSITE MATERIALS AND METHODS AND POWDERS FOR PRODUCING THE SAME
A powder including a plurality of particulates, each particulate including a soft magnetic metallic core coated with a continuous dielectric coating having a thickness selected from a range of 100 nanometers to 100 micrometers. The particulates have a mean particle size selected from a range of 100 nanometers to 250 micrometers. Methods for forming the powder are disclosed. A soft magnetic composite component includes a soft magnetic material in a dielectric matrix, wherein (i) the soft magnetic material comprises a plurality of particulates comprising metallic cores, (ii) each metallic core is coated by a continuous dielectric coating covering >90% of a surface area of the metallic core, (iii) the metallic cores are electrically isolated from each other, and (iv) the dielectric coatings of adjacent metallic cores are consolidated together. Methods for formation of the soft magnetic component by additive manufacturing and hot isostatic pressing are disclosed.
H01F 1/147 - Alliages caractérisés par leur composition
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
A bonded soft magnet object comprising bonded soft magnetic particles of an iron-containing alloy having a soft magnet characteristic, wherein the bonded soft magnetic particles have a particle size of at least 200 nm and up to 100 microns. Also described herein is a method for producing the bonded soft magnet by indirect additive manufacturing (IAM), such as by: (i) producing a soft magnet preform by bonding soft magnetic particles with an organic binder, wherein the magnetic particles have an iron-containing alloy composition with a soft magnet characteristic, and wherein the particles of the soft magnet material have a particle size of at least 200 nm and up to 100 microns; (ii) subjecting the preform to an elevated temperature sufficient to remove the organic binder to produce a binder-free preform; and (iii) sintering the binder-free preform at a further elevated temperature to produce the bonded soft magnet.
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H01F 1/147 - Alliages caractérisés par leur composition
H01F 1/33 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux particules métalliques ayant un revêtement d'oxyde
B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p.ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
A bonded soft magnet object comprising bonded soft magnetic particles of an iron-containing alloy having a soft magnet characteristic, wherein the bonded soft magnetic particles have a particle size of at least 200 nm and up to 100 microns. Also described herein is a method for producing the bonded soft magnet by indirect additive manufacturing (IAM), such as by: (i) producing a soft magnet preform by bonding soft magnetic particles with an organic binder, wherein the magnetic particles have an iron-containing alloy composition with a soft magnet characteristic, and wherein the particles of the soft magnet material have a particle size of at least 200 nm and up to 100 microns; (ii) subjecting the preform to an elevated temperature sufficient to remove the organic binder to produce a binder-free preform; and (iii) sintering the binder-free preform at a further elevated temperature to produce the bonded soft magnet.
B28B 1/00 - Fabrication d'objets façonnés à partir du matériau
B29C 67/00 - Techniques de façonnage non couvertes par les groupes , ou
B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet
15.
DOUBLE-SHOULDERED CONNECTION FOR DRILLING TUBULARS WITH LARGE INSIDE DIAMETER
A threaded connection for drilling tubulars includes a tubular box section having a sidewall. The box section has a tapered box portion of an inner surface of the sidewall between a first end and a second end. The tapered box portion has internal threads, a first torque shoulder on a first side of the tapered box portion, and a second shoulder on a second side of the tapered box portion. A threaded collar having internal collar threads is positioned between the second end and the second shoulder. A threaded insert having a tubular body with an inner surface and an outer surface having external insert threads is configured for threadably connecting to the internal collar threads. A direction of the internal threads of the tapered box portion is opposite to a direction of the internal collar threads and the external insert threads.
A pressure generating device for use in downhole drilling operations includes a rotating valve portion having a first body with at least one first flow channel, and a stationary valve portion having a second body with at least one second flow channels and at least one bypass channel. A flow restrictor is positioned within the at least one bypass channel for adjusting a total flow area of the at least one bypass channel. During rotation of the rotating valve portion relative to the stationary valve portion, a total flow area of a passage defined by the first flow channel(s), the second flow channel(s), and the at least one bypass channel varies according to a uniform closure pattern to provide uniform pressure pulses within a single revolution of the rotating valve portion. A method of generating uniform pressure pulses in downhole drilling operations is also disclosed.
E21B 21/10 - Aménagements des vannes dans les systèmes de circulation des fluides de forage
E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille
E21B 7/24 - Forage utilisant des moyens vibrants ou oscillants, p.ex. des masses déséquilibrées
E21B 21/08 - Commande ou surveillance de la pression ou de l'écoulement du fluide de forage, p.ex. remplissage automatique des trous de forage, commande automatique de la pression au fond
E21B 21/12 - Procédés ou appareils pour nettoyer les trous de forage par jet de fluide, p.ex. en utilisant l'air d'échappement du moteur utilisant des tubes de forage comprenant plusieurs passages pour les fluides, p.ex. systèmes en circuit fermé
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
17.
NI-BASED SUPERALLOY POWDER FOR ADDITIVE MANUFACTURING AND AN ARTICLE MADE THEREFROM
A nickel base superalloy powder for additive manufacturing applications is disclosed. The alloy powder has the following broad weight percent composition: C 0-0.1 Mn 0.5 max. Si 0-0.03 Cr 4-16 Fe 0-1.5 Mo 0-6 W 0-8 Co 0-15 Ti 0-2 A1 0.5-5.5 Nb 0-6 Ta 7.5-14.5 Hf 0-2.0 Zr 0-0.1 Re 0-6 Ru 0-3 B 0-0.03 The balance of the alloy is at least 50% nickel and the usual impurities. An article of manufacture made from the alloy is also disclosed.
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
C22C 19/00 - Alliages à base de nickel ou de cobalt, seuls ou ensemble
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
18.
A METHOD OF MAKING A MULTI-MATERIAL SEGMENTED STATOR FOR A ROTATING ELECTRIC MACHINE AND A STATOR MADE BY SAID METHOD
A method of making a stator for a rotating electrical machine in which a tooth segment from a high saturation induction material and a yoke segment from a silicon steel material. The tooth segment is bond to yoke segment, thereby producing a stator with at least two magnetic saturations.
H02K 1/02 - MACHINES DYNAMO-ÉLECTRIQUES - Détails du circuit magnétique caractérisés par le matériau magnétique
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/16 - Noyaux statoriques à encoches pour enroulements
A magnetic iron alloy and process of making the same. The alloy includes iron, approximately 2 wt. % to approximately 8 wt. % cobalt, approximately 0.05 wt. % to approximately 5 wt. % manganese, and approximately 0.05 wt. % to approximately 5 wt. % silicon. The alloy may also include up to approximately 0.3 wt. % chromium, up to approximately 2 wt. % vanadium, up to approximately 1 wt. % nickel, up to approximately 0.05 wt. % niobium, and up to approximately 0.02 wt. % carbon.
This disclosure relates to a new alloy and methods of making same. The new alloy is an enhanced strength Ti-6A1-4V Grade 23+ titanium alloy having the following composition by weight percent: Aluminum ¨ 6.0 wt% to 6.5 wt%; Vanadium ¨ 4.0 wt% to 4.5 wt%: iron ¨ 0.15 wt% to 0.25 wt%; Oxygen ¨ 0.00 wt% to 0.10 wt%; Nitrogen ¨ 0.01 wt% to 0.03 wt%; Carbon ¨ 0.04 wt% to 0.08 wt%; Hydrogen ¨ 0.0000 to 0.0125 wt%; Other Elements, each ¨ 0.0 wt% to 0.1 wt%; Other Elements, total 0.0 wt% to 0.4 wt%; and Titanium ¨ Balance.
This disclosure relates to a new alloy and methods of making same. The new alloy is an enhanced strength Ti-6A1-4V Grade 23+ titanium alloy having the following composition by weight percent: Aluminum - 6.0 wt% to 6.5 wt%; Vanadium - 4.0 wt% to 4.5 wt%; Iron - 0.15 wt% to 0.25 wt%; Oxygen - 0.00 wt% to 0.10 wt%; Nitrogen - 0.01 wt% to 0.03 wt%; Carbon - 0.04 wt% to 0.08 wt%; Hydrogen - 0.0000 wt% to 0.0125 wt%; Other Elements, each - 0.0 wt% to 0.1 wt%; Other Elements, total - 0.0 wt% to 0.4 wt%; and Titanium - Balance.
A soft magnetic alloy having a good combination of formability and magnetic properties is disclosed. The alloy has the formula Fe100-a-b-c-d-e-fSiaMbLcM'dM"eRf wherein M is Cr and/or Mo; L is Co and/or Ni; M' is one or more of Al, Mn, Cu, Ge, Ga; M" is one or more of Ti, V, Hf, Nb, W; and R is one or more of B, Zr, Mg, P, Ce. The elements Si, M, L, M', M", and R have the following ranges in weight percent: Si 4-7 M 0.1-7 L 0.1-10 M' up to 7 M" up to 7 R up to 1 The balance of the alloy is iron and usual impurities. A thin-gauge article made from the alloy and a method of making the thin-gauge article are also disclosed.
A multi-principal element, corrosion resistant alloy is disclosed. The alloy has the following composition in weight percent: Co about 13 to about 28 Ni about 13 to about 28 Fe+Mn about 13 to about 28 Cr about 13 to about 37 Mo about 8 to about 28 N about 0.10 to about 1.00. The alloy also includes the usual impurities found in corrosion resistant alloys intended for the same or similar use. In addition, one or both of W and V may be substituted for some or all of the Mo. The alloy provides a solid solution that is substantially all FCC phase, but may include minor amounts of secondary phases that do not adversely affect the corrosion resistance and mechanical properties provided by the alloy.
An Fe-base, soft magnetic alloy is disclosed. The alloy has the general formula Fe100-a-b-c-d-x-y MaM'bM"cM"'d Px Mny where M is Co and/or Ni, M' is one or more of Zr, Nb, Cr, Mo, Hf, Sc, Ti, V, W, and Ta, M" is one or more of B, C, Si, and Al, and M'" is selected from the group consisting of Cu, Pt, Ir, Zn, Au, and Ag. The subscripts a, b, c, d, x, and y represent the atomic proportions of the elements and have the following atomic percent ranges: 0 ≤ a ≤ 10, 0 ≤ b ≤ 7, 5 ≤ c ≤ 20, 0 ≤ d ≤ 5, 0.1 ≤ x ≤ 15, and 0.1 ≤ y ≤ 5. The balance of the alloy is iron and usual impurities. Alloy powder, a magnetic article made therefrom, and an amorphous metal article made from the alloy are also disclosed.
C22C 45/02 - Alliages amorphes avec le fer comme constituant majeur
H01F 1/20 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de particules, p.ex. de poudre
H01F 1/147 - Alliages caractérisés par leur composition
A method and apparatus for producing titanium metal powder from a melt. The apparatus includes an atomization chamber having an inner wall that is coated with or formed entirely of a titanium alloy that is the same as the titanium metal powder to prevent contamination of titanium metal powder therein. The inner surfaces of some or all components of the apparatus in a flow path following the atomization chamber may also be coated with or formed entirely of the titanium alloy or CP-Ti.
B22F 9/08 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau liquide par coulée, p.ex. à travers de petits orifices ou dans l'eau, par atomisation ou pulvérisation
C22C 1/04 - Fabrication des alliages non ferreux par métallurgie des poudres
27.
REDUCING ORDERED GROWTH IN SOFT-MAGNETIC FE-CO ALLOYS
A process for making an article of manufacture from elongated strip of a soft-magnetic Fe-Co alloy is disclosed. The process includes a prefabrication annealing step in which the elongated strip is annealed before it is fabricated into parts. The prefabrication annealing step is carried out at a temperature that is greater than the ordering temperature of the alloy. The process further includes the step of cooling the alloy from the annealing temperature at a rate that is selected to cause substantial transformation of the disordered phase of the soft- magnetic Fe-Co alloy to an ordered phase thereof. An article of manufacture made by using the process is also disclosed.
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C22C 38/12 - Alliages ferreux, p.ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
H01F 1/147 - Alliages caractérisés par leur composition
H01F 1/16 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriés; Emploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de feuilles
H01F 3/02 - Noyaux, culasses ou induits en feuilles
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
28.
HIGH TEMPERATURE, DAMAGE TOLERANT SUPERALLOY, AN ARTICLE OF MANUFACTURE MADE FROM THE ALLOY, AND PROCESS FOR MAKING THE ALLOY
A nickel-base alloy is disclosed that has the following weight percent composition. C about 0.005 to about 0.06 Cr about 13 to about 17 Fe about 4 to about 20 Mo about 3 to about 9 W up to about 8 Co up to about 12 Al about 1 to about 3 Ti about 0.6 to about 3 Nb up to about 5.5 B about 0.001 to about 0.012 Mg about 0.0010 to about 0.0020 Zr about 0.01 to about 0.08 Si up to about 0.7 P up to about 0.05 and the balance is nickel, usual impurities, and minor amounts of other elements as residuals from alloying additions during melting,. The alloy provides a combination of high strength, good creep resistance, and good resistance to crack growth. A method of heat treating a nickel base superalloy to improve the tensile ductility of the alloy is also disclosed. An article of manufacture made from the nickel base superalloy described herein is also disclosed.
A Ti-6A1 -4V titanium powder alloy composition having enhanced strength resulting from the addition of one or more of the following elements without requiring an increase in oxygen content: Aluminum Iron Nitrogen Carbon The composition may also be used for Ti-6A1-4V titanium alloy starting bar stock.
The United States Of America, as represented by the Secretary Of The Navy (USA)
Inventeur(s)
Sinfield, Matthew
Farren, Jeffrey
Wong, Richard
Martin, William J.
Smith, Richard H.
Para, Shane
Heilmann, James E.
Novotny, Paul M.
Ray, Patrick C.
Deantonio, Dan
Stravinskas, Joe
Abrégé
An exemplary welding consumable according to the invention is provided and includes up to about 0.13 wt % carbon, about 0.3 wt % to about 1.4 wt % manganese, about 7.25 wt % to about 11.5 wt % nickel, about 0.6 wt % to about 1.2 wt % molybdenum, about 0.2 wt % to about 0.7 wt % silicon, up to about 0.3 wt % vanadium, up to about 0.05 wt % titanium, up to about 0.08 wt % zirconium, up to about 2.0 wt % chromium, and a balance of iron and incidental impurities.
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
B23K 35/02 - Baguettes, électrodes, matériaux ou environnements utilisés pour le brasage, le soudage ou le découpage caractérisés par des propriétés mécaniques, p.ex. par la forme
C22C 38/12 - Alliages ferreux, p.ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p.ex. aciers alliés contenant du titane ou du zirconium
C22C 38/44 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C21D 9/50 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour joints de soudure
C21D 9/52 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour bandes métalliques
31.
HIGH STRENGTH WELDING CONSUMABLE BASED ON A 10% NICKEL STEEL METALLURGICAL SYSTEM
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY (USA)
Inventeur(s)
Sinfield, Matthew
Farren, Jeffrey
Wong, Richard
Martin, William J.
Smith, Richard H.
Para, Shane
Heilmann, James E.
Novotny, Paul M.
Ray, Patrick C.
Deantonio, Dan
Stravinskas, Joe
Abrégé
An exemplary welding consumable according to the invention is provided and includes up to about 0.13 wt % carbon, about 0.3 wt % to about 1.4 wt % manganese, about 7.25 wt% to about 11.5 wt % nickel, about 0.6 wt % to about 1.2 wt % molybdenum, about 0.2 wt % to about 0.7 wt % silicon, up to about 0.3 wt % vanadium, up to about 0.05 wt % titanium, up to about 0.08 wt % zirconium, up to about 2.0 wt % chromium, and a balance of iron and incidental impurities.
A steel alloy is disclosed that provides a unique combination of strength, toughness, and fatigue life. The steel alloy has the following composition in weight percent. C about 0.15 to about 0.30 Mn about 1.7 to about 2.3 Si about 0.7 to about 1.1 Cr about 1.85 to about 2.35 Ni about 0.5 to about 0.9 MO+1/2W about 0.1 to about 0.3 Cu about 0.3 to about 0.7 V+5/9xNb about 0.2 to about 0.5 The balance of the alloy is iron, usual impurities, and residual amounts of other elements added during melting for deoxidizing and/or desulfurizing the alloy. A hardened and tempered steel article made from the alloy is also disclosed.
37 - Services de construction; extraction minière; installation et réparation
Produits et services
(1) Oil and gas field down-hole equipment tooling, namely, stabilizers, drill collars, subs, hole openers and bottom-hole assembly tools (1) Repair and maintenance of down-hole equipment tooling and assemblies used in the drilling of oil and gas wells; leasing and rental of oil well drilling and production tools, namely, drill collars, stabilizers, subs, hole openers, float valves, baffle plates, sleeves, and drill pipe screens
A magnetic iron alloy and process of making the same. The alloy includes iron, approximately 2 wt.% to approximately 10 wt.% cobalt, approximately 0.05 wt.% to approximately 5 wt.% manganese, and approximately 0.05 wt.% to approximately 5 wt.% silicon. The alloy may also include up to approximately 3 wt.% chromium, up to approximately 2 wt.% vanadium, up to approximately 1 wt.% nickel, up to approximately 0.05 wt.% niobium, and up to approximately 0.02 wt.% carbon.
Disclosed herein is a method comprising disposing on a base article a nickel-titanium alloy; where the nickel is in an amount of about 58 to about 62 weight percent and titanium in an amount of about 38 to about 42 wt %, based on the total weight of the nickel-titanium alloy; and applying a pressure of 12 to 20 kilopounds per square inch at a temperature of 1400 to 2100° F. for a period of 1 to 8 hours to form a nickel-titanium alloy coating on the base article. Disclosed is an article comprising a base article; and a nickel-titanium alloy; where the nickel-titanium alloy is disposed on the base article; where the nickel is in an amount of about 58 to about 62 weight percent and titanium in an amount of about 38 to about 42 wt %, based on the total weight of the nickel-titanium alloy.
C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
B32B 15/04 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique
B32B 37/10 - Procédés ou dispositifs pour la stratification, p.ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par la technique de pressage, p.ex. faisant usage de l'action directe du vide ou d'un fluide sous pression
B32B 37/06 - Procédés ou dispositifs pour la stratification, p.ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par le procédé de chauffage
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B05D 7/24 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers pour appliquer des liquides ou d'autres matériaux fluides particuliers
B05D 3/02 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliqués; Traitement ultérieur des revêtements appliqués, p.ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par cuisson
B05D 7/14 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers à du métal, p.ex. à des carrosseries de voiture
B23K 20/02 - Soudage non électrique par percussion ou par une autre forme de pression, avec ou sans chauffage, p.ex. revêtement ou placage au moyen d'une presse
C23C 28/02 - Revêtements uniquement de matériaux métalliques
C23C 26/00 - Revêtements non prévus par les groupes
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c. à d. non caractérisé par le procédé de revêtement
C22C 19/00 - Alliages à base de nickel ou de cobalt, seuls ou ensemble
C23C 24/08 - Revêtement à partir de poudres inorganiques en utilisant la chaleur ou une pression et la chaleur
38.
Method of manufacturing a ferrous alloy article using powder metallurgy processing
A method of manufacturing a ferrous alloy article is disclosed and includes the steps of melting a ferrous alloy composition into a liquid, atomizing and solidifying of the liquid into powder particles, outgassing to remove oxygen from the surface of the powder particles, and consolidating the powder particles into a monolithic article.
B22F 3/17 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittage; Appareils spécialement adaptés à cet effet par forgeage
C21D 6/04 - Durcissement par refroidissement au-dessous de 0° C
C21D 7/13 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à chaud
39.
A FERROUS ALLOY FOR COINING AND MEHTOD FOR PRODUCING THE SAME
A ferrous alloy is provided for coining. The ferrous alloy includes a composition of: 4.00- 10.80 wt % of chromium (Cr), 8.00-25.00 wt % of nickel (Ni), 3.00-6.00 wt % of copper (Cu), and a balance of iron (Fe) and incidental impurities.
A ferrous alloy is provided for coining The ferrous alloy includes a composition of: 4.00-10.80 wt % of chromium (Cr), 8.00-25.00 wt % of nickel (Ni), 3.00-6.00 wt % of copper (Cu), and a balance of iron (Fe) and incidental impurities.
C22C 38/42 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du cuivre
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
C21D 7/00 - Modification des propriétés physiques du fer ou de l'acier par déformation
A44C 21/00 - Pièces de monnaie; Jetons; Pièces ou jetons à usage privé ou de jeu, ou similaires
C22C 1/02 - Fabrication des alliages non ferreux par fusion
C22C 38/58 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C22C 38/34 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
B21B 1/02 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer de grosses pièces, p.ex. des lingots, brames, billettes dont la section droite est sans importance
B21D 19/00 - Mise en forme ou autres traitements des bords, p.ex. des bords des tubes
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B24B 1/00 - Procédés de meulage ou de polissage; Utilisation d'équipements auxiliaires en relation avec ces procédés
C21D 6/00 - Traitement thermique des alliages ferreux
A precipitation hardenable, martensitic stainless steel alloy is disclosed. The alloy has the following composition in weight percent, about C 0.03 max Mn 1.0 max Si 0.75 max P 0.040 max s 0.020 max Cr 10 - 13 Ni 10.5 - 11.6 Mo 0.25 - 1.5 Co 0.5-1.5 Cu 0.75 max Ti 1.5 - 1.8 Al 0.3 - 0.8 Nb 0.3 - 0.8 B 0.010 max N 0.030 max The balance is iron and usual impurities. The disclosed alloy provides a unique combination of corrosion resistance, strength, and toughness.
A quench and temper steel alloy is disclosed having the following composition in weight percent. C 0.2-0.5 Mn 0.1-1.0 Si 0.1-1.2 Cr 9-14.5 Ni 3.0-5.5 Mo 1-2 Cu 0-1.0 Co 1-4 W 0.2 max. V 0.1-1.0 Ti up to 0.5 Nb 0-0.5 Ta 0-0.5 Al 0-0.25 Ce 0-0.01 La 0-0.01 The balance of the alloy is iron and the usual impurities found in similar grades of quench and temper steels intended for similar use or service, including not more than 0.01% phosphorus, not more than 0.010%) sulfur, and not more than 0.10% nitrogen. A quenched and tempered steel article made from this alloy is also disclosed. The steel article is characterized by having a tensile strength of at least 290 ksi and a fracture toughness (Klc) of at least 65 ksi. The steel article is further characterized by having good resistance to general corrosion as determined by the salt spray test (ASTM Bl 17) and good resistance to pitting corrosion as determined by the cyclic potentiodynamic polarization method (ASTM G61 Modified).
A high strength, high toughness steel alloy is disclosed having the following weight percent composition. Element C 0.30-0.55 Mn 0.6-1.75 Si 0.9-2.8 Cr 0.6-2.5 Ni 2.70-7.0 Mo + ½ W 0.25-1.3 Cu 0.30-1.25 Co 0.01 max. V + (5/9) x Nb 0.10-1.0 Ti 0.01 max. Al 0.015 max. Ca 0.005 max. The alloy further includes a grain refining element selected from the group consisting of 0.0001- 0.01% Mg, 0.001-0.025% Y, and a combination thereof. The balance of the alloy is iron and usual impurities. Also disclosed is a hardened and tempered steel article having very high strength and fracture toughness and formed from the alloy set forth above. The alloy article according to this aspect of the invention is further characterized by being tempered at a temperature of about 500°F to 600°F.
A method and apparatus for producing titanium metal powder from a melt. The apparatus includes an atomization chamber having an inner wall that is coated with or formed entirely of CP-Ti to prevent contamination of titanium metal powder therein. The inner surfaces of all components of the apparatus in a flow path following the atomization chamber may also be coated with or formed entirely of CP-Ti.
B22F 9/08 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau liquide par coulée, p.ex. à travers de petits orifices ou dans l'eau, par atomisation ou pulvérisation
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Oil and gas field down-hole equipment tooling, namely, stabilizers, drill collars, subs, hole openers and bottom-hole assembly tools Repair and maintenance of down-hole equipment tooling and assemblies used in the drilling of oil and gas wells; leasing and rental of oil well drilling and production tools, namely, drill collars, stabilizers, subs, hole openers, float valves, baffle plates, sleeves, and drillpipe screens
A high strength, high toughness steel alloy is disclosed. The alloy has the following weight percent composition. Element C 0.30-0.47 Mn 0.8-1.3 Si 1.5-2.5 Cr 1.5-2.5 Ni 3.0-5.0 Mo + ½ W 0.7-0.9 Cu 0.70-0.90 Co 0.01 max. V + (5/9) x Nb 0.10-0.25 Ti 0.005 max. Al 0.015 max. Fe Balance Included in the balance are the usual impurities found in commercial grades of steel alloys produced for similar use and properties including not more than about 0.01% phosphorus and not more than about 0.001% sulfur. Also disclosed is a hardened and tempered article that has very high strength and fracture toughness. The article is formed from the alloy having the weight percent composition set forth above. The alloy article according to this aspect of the invention is further characterized by being tempered at a temperature of about 500°F to 600°F.
A corrosion resistant, neutron absorbing, austenitic alloy powder is disclosed having the following composition in weight percent. C 0.08 max., Mn up to 3, Si up to 2, P 0.05 max., S 0.03 max., Cr 17-27, Ni 11-20, Mo+(W/1.92) up to 5.2, BEq 0.78-13.0, O 0.1 max., N up to 0.2, Y less than 0.005. The alloy contains at least about 0.25% B, at least about 0.05% Gd, and the balance of the alloy composition is iron and usual impurities. BEq is defined as %>B + 4.35x(%>Gd). An article of manufacture made from consolidated alloy powder is also disclosed which is characterized by a plurality of boride and gadolinide particles dispersed within a matrix. The boride and gadolinide particles are predominantly M2B, M3B2, M3X, and M5X in form, where X is gadolinium or a combination of gadolinium and boron and M is one or more of the elements silicon, chromium, nickel, molybdenum, iron.
A stainless steel strip article is disclosed. The article is formed from a corrosion resistant alloy having the following composition in weight percent, C 0.03 max. Mn 1.0 max. Si 0.75 max. P 0.040 max. S 0.020 max. Cr 10.9-11.1 Ni 10.9-11.1 Mo 0.9-1.1 Ti 1.5-1.6 Al 0.25 max. Nb 0.7-0.8 Cu 1 max. B 0.010 max. N 0.030 max. The balance is iron and usual impurities. The elongated thin strip article provides a room temperature tensile strength of at least 280 ksi (1930.5 MPa) in the solution treated and age hardened condition. A method of making the strip article and a method of using it to make a golf club are also disclosed.
C21D 7/02 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C22C 38/48 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
50.
FREE-MACHINING POWDER METALLURGY STEEL ARTICLES AND METHOD OF MAKING SAME
A small diameter, elongated steel article, comprising fully consolidated, prealloyed metal powder is disclosed. The consolidated metal powder has a microstructure that has a substantially uniform distribution of fine grains having a grain size of not larger than about 9 when determined in accordance with ASTM Standard Specification E 112. The microstructure of the consolidated metal powder is further characterized by having a plurality of substantially spheroidal carbides uniformly distributed throughout the consolidated metal powder that are not greater than about 6 microns in major dimension and a plurality of sulfides uniformly distributed throughout the consolidated metal powder wherein the sulfides are not greater than about 2 microns in major dimension. A process for making the elongated steel article is also disclosed.
B22F 5/12 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser de tubes ou de fils
B22F 9/08 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau liquide par coulée, p.ex. à travers de petits orifices ou dans l'eau, par atomisation ou pulvérisation
C22C 33/02 - Fabrication des alliages ferreux par des techniques de la métallurgie des poudres
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
A high strength, high toughness steel alloy is disclosed. The alloy has the following broad weight percent composition. Included in the balance are the usual impurities found in commercial grades of steel alloys produced for similar use and properties. Also disclosed is a hardened and tempered article that has very high strength and fracture toughness. The article is formed from the alloy having the broad weight percent composition set forth above. The alloy article according to this aspect of the invention is further characterized by being tempered at a temperature of about 500°F to 600°F.
A process for making a precipitation hardenable stainless steel alloy is described. The process includes the step of melting a martensitic steel alloy having the following composition in weight percent, about Carbon 0.03 max. Manganese 1.0 max. Silicon 0.75 max. Phosphorus 0.040 max. Sulfur 0.020 max. Chromium 10-13 Nickel 10.5-11.6 Titanium 1.5-1.8 Molybdenum 0.25-1.5 Copper 0.95 max. Aluminum 0.25 max. Niobium 0.3 max. Boron 0.010 max. Nitrogen 0.030 max. and the balance being iron and usual impurities. The process also includes the step of adding calcium to the alloy while molten. The calcium combines with available sulfur and oxygen to form calcium base inclusions selected from the group consisting of calcium sulfides, calcium oxides, calcium oxysulfides, and combinations thereof. In a further step, the alloy is processed to remove at least a portion of the calcium base inclusions. The alloy is then solidified. As a result of the process, the alloy has a matrix containing a sparse dispersion of said calcium-based inclusions and substantially no rare-earth base inclusions.
An age hardenable, martensitic steel alloy that provides high strength, high toughness, and good low cycle fatigue life and a method of making same are disclosed. The alloy comprises a matrix having a weight percent composition consisting essentially of about Carbon 0.2-0.36 Manganese 0.20 max. Silicon 0.10 max. Phosphorus 0.01 max. Sulfur 0.004 max. Chromium 1.3-4 Nickel 10-15 Molybdenum 0.75-2.7 Cobalt 8-22 Aluminum 0.01 max. Titanium 0.02 max. Calcium 0.001 max. and the balance being iron and usual impurities. The alloy further contains a plurality of inclusions dispersed in the alloy matrix. The inclusions comprise calcium compounds that are about 0.4μm to about 7.0μm in major dimension, they have a median size of at least about 1.6μm in major dimension, and the inclusions contain essentially no rare earth elements.
Medical devices, such as endoprostheses, and methods of making the devices are disclosed. The endoprostheses comprise a tubular member capable of maintaining patency of a bodily vessel. The tubular member includes a mixture of at least two compositions, where the presence of the second composition gives the mixture a greater hardness than that of the first composition alone. The first composition includes less than about 25 weight percent chromium, less than about 7 weight percent molybdenum, from about 10 to about 35 weight percent nickel, and iron. The second composition is different from the first and is present from about 0.1 weight percent to about 5 weight percent of the mixture.
A61L 27/42 - Matériaux composites, c. à d. en couches ou contenant un matériau dispersé dans une matrice constituée d'un matériau analogue ou différent comportant une matrice inorganique
A61L 31/12 - Matériaux composites, c. à d. en couches ou contenant un matériau dispersé dans une matrice constituée d'un matériau analogue ou différent
A61L 31/18 - Matériaux au moins partiellement opaques aux rayons X ou au laser
55.
Method of producing high strength, high stiffness and high ductility titanium alloys
A method of producing a high strength, high stiffness and high ductility titanium alloy, comprising combining the titanium alloy with boron so that the boron concentration in the boron-modified titanium alloy does not exceed the eutectic limit. The carbon concentration of the boron-modified titanium alloy is maintained below a predetermined limit to avoid embrittlement. The boron-modified alloy is heated to a temperature above the beta transus temperature to eliminate any supersaturated excess boron. The boron-modified titanium alloy is deformed at a speed slow enough to prevent microstructural damage and reduced ductility.
A corrosion-resistant, free-machining, magnetic stainless steel alloy is described. The alloy has the following weight percent composition: 0.025 max. C, 0.60 max. Mn, 1.0-2.0 Si, 0.035 max. P, 0.1 5-0.40 S, 12.0-14.0 Cr, 0.5 max. Ni, 0.5-1.3 Mo, 0.5-1.3 V, 0.5 max. Cu, 0.020 max. Al, 0.025 max. N, and the balance is iron and usual impurities.
An age hardenable martensitic steel alloy is disclosed. The alloy has the following composition in weight percent. C 0.30-0.36; Mn 0.05 max.; Si 0.05 max.; P 0.01 max.; S 0.0010 max.; Cr 1.30-3.2; Ni 10.0-13.0; Mo 1.0-2.70; Co 13.8-17.4; Ti 0.02 max.; Al 0.005 max.; Ce 0.030 max.; La 0.010 max. The balance is iron and the usual impurities. The composition of this alloy is balanced to provide a unique combination of very high strength, together with good toughness, ductility, and resistance to fatigue.
A corrosion resistant, martensitic steel alloy having very good cold formability is described. The alloy has the following weight percent composition. Carbon 0.10-0.40 Manganese 0.01 -2.0 Silicon 2.0 max. Phosphorus 0.2 max. Sulfur 0.030 max. Chromium 10-15 Nickel 0.5 max. Molybdenum 0.75-4.0 Nitrogen 0.02-0.15 Copper 1 .5-4.0 Titanium 0.01 max. Aluminum 0.01 max. Niobium + 0.10 max. Tantalum Vanadium 0.20 max. Zirconium less than 0.001 Calcium less than 0.001 The balance of the alloy is essentially iron. Nickel and copper are balanced in the alloy such that the ratio Ni/Cu is less than 0.2. A second embodiment of the alloy contains at least about 0.005% sulfur, selenium, or a combination thereof to provide good machinability.
A method of reducing the oxygen content of a powder is provided. A canister is prepared with a getter, filled with the powder to be densified, sealed and evacuated. The canister is subjected to a hydrogen atmosphere at an elevated temperature whereby hydrogen diffuses into the canister through the walls thereof. The hydroge forms moisture when reacted with the oxygen of the powder and the moisture in the reacted with the getter in order to remove oxygen from the powder to the getter. The atmosphere outside the canister is then altered to an inert atmosphere or vacuum, whereby hydrogen diffuses out of the canister. A dense body having a controlled amount of oxygen can thereafter be produced by conventional powder metallurgy techniques.
