The invention relates to a lead-free brass alloy, containing 59 to 62 wt % Cu, 2.0 to 2.5 wt % Mn, 0.5 to 1.5 wt % Si, less than 0.1 wt % Pb, and a remainder of Zn and unavoidable impurities. The invention additionally relates to a bearing element or a bushing which is produced from the lead-free brass alloy.
The invention relates to a lead-free brass alloy, containing 55 to 59 wt % Cu, 2.0 to 2.5 wt % Mn, 0.65 to 1.5 wt % Si, less than 0.1 wt % Pb, and a remainder of Zn and unavoidable impurities. The invention additionally relates to a machine element which is produced from the lead-free brass alloy.
Method for producing a support film for catalytic converters with application temperatures < 900°C, consisting of an iron-chromium-aluminium alloy containing 8-14% by weight Cr, 1-4% by weight Al and iron as the remainder, along with melting impurities, by the alloy being cast in the form of ingots, the ingots being hot-rolled or forged into slabs of thicknesses between 150 and 400 mm, the slabs in the hot state either being cooled down to room temperature in air/oil/water or first placed with an insert into an oven installation in the temperature range of 475°C to 700°C and, following a heat-retention phase for a holding period of between 0.5 and 100 hours at a defined holding temperature of between 475°C and 700°C, cooled down to room temperature outside the furnace installation.
USE OF A NICKEL-IRON-CHROMIUM ALLOY HAVING HIGH RESISTANCE IN CARBURISING AND SULPHIDISING AND CHLORINATING ENVIRONMENTS AND SIMULTANEOUSLY GOOD PROCESSABILITY AND STRENGTH
The invention relates to the use of a nickel-iron-chromium alloy having excellent high-temperature corrosion resistance as a semi-finished product in simultaneously carburising, sulphidising and chlorinating environments, said alloy comprising (in wt.%): 35.0 to 38% nickel, 26.0 to 30.0% chromium, > 0.7 to 1.50% silicon, 0.40 to 1.30% aluminium, 0.00 to 1.0% manganese, 0.0001 to 0.05% each of magnesium and/or calcium, 0.015 to 0.12% carbon, 0.001 to 0.150% nitrogen, 0.001 to 0.030% phosphorus, 0.0001 to 0.020% oxygen, a maximum of 0.010% sulphur, less than 1.0% molybdenum, less than 1.0 % cobalt, less than 0.5% copper, less than 1.0% tungsten, the remainder being iron and the usual process-related impurities, it being necessary to satisfy the following equation: Fc = - 1.2 + 0.29*Ni - 4.6*Si - 4.4*AI < 2.5 (1 a), where Ni, Si and AI are the concentration of the elements in question in wt.%.
The invention relates to the use of a nickel-iron-chromium alloy having excellent high-temperature corrosion resistance as a powder, the powder consisting of spherical particles of a size of 5 to 250 pm, and said alloy comprising (in wt.%): 35.0 to 38% nickel, 26.0 to 30.0% chromium, > 0.7 to 1.50% silicon, 0.40 to 1.30% aluminium, 0.00 to 1.0% manganese, 0.0001 to 0.05% each of magnesium and/or calcium, 0.015 to 0.12% carbon, 0.001 to 0.150% nitrogen, 0.001 to 0.030% phosphorus, 0.0001 to 0.020% oxygen, a maximum of 0.010% sulphur, less than 1.0% molybdenum, less than 1.0 % cobalt, less than 0.5% copper, less than 1.0% tungsten, the remainder being iron and the usual process-related impurities, it being necessary to satisfy the following equation: Fc = - 1.2 + 0.29*Ni - 4.6*Si - 4.4*AI < 2.5 (1 a), where Ni, Si and AI are the concentration of the elements in question in wt.%.
The invention relates to a method for producing a component with one or more weld seams and/or for installing a component into a system with one or more weld seams consisting of a nickel-chromium-aluminium alloy, with (in wt.%) greater than 18 to 33% chromium, 1.8 to 4.0% aluminium, 0.01 to 7.0% iron, 0.001 to 0.50% silicon, 0.001 to 2.0% manganese, 0.00 to 0.60% titanium, respectively 0.0 to 0.05% magnesium and/or calcium, 0.005 to 0.12% carbon, 0.0005 to 0.050% nitrogen, 0.0001 to 0.020% oxygen, 0.001 to 0.030% phosphorus, max. 0.010% sulphur, max. 2.0% molybdenum, max. 2.0% tungsten, with the rest being greater than or equal to 50% nickel and the usual method-related impurities, wherein the component partially or entirely consists of semi-finished products of this nickel-chromium-aluminium wrought alloy, and after the welding operation, only the weld seams made of this nickel-chromium-aluminium wrought alloy and the heat-affected zones surrounding the weld seams undergo annealing between greater than 980 and 1250 °C for times of 0.05 minutes up to 24 hours in order to homogenise the weld seams and/or reduce stress, followed by cooling in inert protective gas or air, moving (blown) protective gas or air, with the result that the creep strength and the creep ductility of the weld seams are improved with this annealing operation, wherein the following conditions must be fulfilled: (1a): Cr + AI ≥ 28 and (2a): Fp ≤ 39.9 with (3a): Fp = Cr + 0.272*Fe + 2.36*AI + 2.22*Si + 2.48*Ti + 0.374*Mo + 0.538*W - 11.8*C, wherein Cr, Fe, AI, Si, Ti, Mo, W and C are the concentrations of the respective elements in wt.%.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
C21D 9/50 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
7.
METHOD FOR PRODUCING A COMPONENT FROM THE SEMI-FINISHED PRODUCT OF AN NICKEL-CHROMIUM-ALUMINIUM ALLOY
The invention relates to a method for producing a component, partially or entirely formed from a semi-finished product of a nickel-chromium-aluminium alloy, with (in wt.%) greater than 18 to 33% chromium, 1.8 to 4.0% aluminium, 0.01 to 7.0% iron, 0.001 to 0.50% silicon, 0.001 to 2.0% manganese, 0.00 to 0.60% titanium, respectively 0.0 to 0.05% magnesium and/or calcium, 0.005 to 0.12% carbon, 0.0005 to 0.050% nitrogen, 0.0001 to 0.020% oxygen, 0.001 to 0.030% phosphorus, max. 0.010% sulphur, max. 2.0% molybdenum, max. 2.0% tungsten, with the rest being greater than or equal to 50% nickel and the usual method-related impurities, wherein the component contains weld seams of the same type and/or the component is partially or entirely provided with weld seams of the same type for installation in a system, wherein, and after the welding operation, only the weld seams of the same type and the heat-affected zones undergo annealing between greater than 980 and 1250 °C for times of 0.05 minutes up to 24 hours in order to homogenise the weld seams and/or reduce stress, followed by cooling in inert protective gas or air, moving (blown) protective gas or air, with the result that the creep strength and the creep ductility of the weld seams are improved with this annealing operation, wherein the following conditions must be fulfilled: (1a): Cr + AI ≥ 28; and (2a): Fp ≤ 39.9, with (3a): Fp = Cr + 0.272*Fe + 2.36*AI + 2.22*Si + 2.48*Ti + 0.374*Mo + 0.538*W - 11.8*C, wherein Cr, Fe, AI, Si, Ti, Mo, W and C are the concentrations of the respective elements in wt.%.
C21D 9/50 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
8.
NICKEL-BASE ALLOY COMPOSITION FOR COMPONENTS WITH REDUCED CRACKING TENDENCY AND OPTIMISED HIGH-TEMPERATURE PROPERTIES
A nickel-based alloy composition is specified, comprising nickel as main constituent and the following further constituents in weight per cent (wt%): 0.04 to 0.10% carbon (C), 8 to 13% tantalum (Ta), 12 to 20% chromium (Cr), 3 to 25% cobalt (Co), less than 0.03% manganese (Mn), less than 0.06% silicon (Si), 0 to 6% molybdenum (Mo), less than 5.0% iron (Fe), 2 to 4% aluminium (Al), less than 0.01% magnesium (Mg), less than 0.02% vanadium (V), 0 to 6% tungsten (W), less than 1% titanium (Ti), less than 0.03% yttrium (Y), 0.005 to 0.015% boron (B), less than 0.003% sulfur (S), 0.005 to 0.04% zirconium (Zr) and less than 3% hafnium. Also specified are the use thereof for an additive manufacturing method, a method for additive manufacturing of a component from a powder of said alloy composition, a corresponding intermediate alloy, and a component consisting of the nickel-based superalloy.
The invention relates to the use of an alloy having the composition (in mass per cent) C max. 0.02%, S max. 0.01%, N max. 0.03%, Cr 20.0 - 23.0%, Ni 39.0 - 44.0%, Mn 0.4 - < 1.0%, Si 0.1 - < 0.5%, Mo > 4.0 - < 7.0%, Nb max. 0.15%, Cu > 1.5 - < 2.5%, Al 0.05 - < 0.3%, Co max. 0.5%, B 0.001 - < 0.005%, Mg 0.005 - < 0.015%, remainder Fe and impurities resulting from fusion, which is further processed via the molten phase as an alloyed solid in the form of a wire, strip, rod or powder and is used in the oil, gas and chemical industry in wet corrosion applications.
The invention relates to the use of an alloy with the composition (in wt.%) Ni 33.5 - 35.0%, Cr 26.0 - 28.0%, Mo 6.0 - 7.0%, Fe < 33.5%, Mn 1.0 - 4.0%, Si < 0.1%, Cu 0.5 - 1.5%, AI 0.01% - 0.3%, C < 0.01%, P < 0.015%, S < 0.01%, N 0.1 - 0.25%, B 0.001 - 0.004%, sE > 0 - 1.0%, if required W <0.2%, Co <0.5%, Nb < 0.2%, Ti < 0.1%, and impurities from the melting process, as a welding-plating material in the area of thermal processing systems, in particular rubbish, biomass, sewage sludge and substitute fuel systems, wherein, after the build-up welding, in the operationally stressed state in a fully austenitic structural matrix, the welding-plating material forms a sigma phase and other hard particles in the weld material microstructure in a targeted manner.
The invention relates to a titanium-free cobalt-chromium alloy for a powder, consisting of (in wt.%) C 0.40 - 1.50%, Cr 24.0 - 32.0%, W 3.0 - 8.0%, Mo 0.1 - 5.0%, where 4.0 < W + Mo < 9.5 is satisfied by the content of W and Mo in wt.%, Nb max. 0.5%, Ta max. 0.5 %, where Nb + Ta < 0.8 is satisfied by the content of Nb and Ta in wt.%, Ni 0.005 - 25.0%, Fe 0.005 - 15.0%, where Ni + Fe > 3.0 is satisfied by the content of Ni and Fe in wt.%, Mn 0.005 - 5.0%, AI max. 0.5%, N 0.0005 - 0.15%, Si < 0.3%, Cu max. 0.4%, O 0.0001 - 0.1%, P max. 0.015%, B max. 0.015%, S max. 0.015%, residual Co, and impurities resulting from the production process, in particular Zr max. 0.03% and Ti max. 0.025%.
C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
The invention relates to a nickel-chromium-aluminum alloy comprising (in mass %) 12 to 30% chromium, 1.8 to 4.0% aluminum, 0.1 to 7.0% iron, 0.001 to 0.50% silicon, 0.001 to 2.0% manganese, 0.00 to 1.00% titanium, 0.00 to 1.10% niobium, 0.00 to 0.5% copper, 0.00 to 5.00% cobalt, in each case 0.0002 to 0.05% magnesium and/or calcium, 0.001 to 0.12% carbon, 0.001 to 0.050% nitrogen, 0.001 to 0.030% phosphorus, 0.0001 to 0.020% oxygen, max. 0.010% sulfur, max. 2.0% molybdenum, max. 2.0% tungsten, and a remainder of nickel with a minimum content of ≥ 50% and the usual process-related impurities for use in solar power towers, using chloride and/or carbonate salt melts as a heat transfer medium, wherein in order to ensure a good processability, the following condition must be met: Fv ≥ 0.9 mit Fv = 4.88050 - 0.095546*Fe - 0.0178784*Cr - 0.992452*AI - 1.51498*Ti - 0.506893*Nb + 0.0426004*AI*Fe, where Fe, Cr, AI, Ti, and Nb are the concentration of the respective elements in mass %.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
13.
NICKEL-CHROMIUM-IRON-ALUMINUM ALLOY HAVING GOOD PROCESSABILITY, CREEP RESISTANCE AND CORROSION RESISTANCE, AND USE THEREOF
The invention relates to a nickel-chromium-iron-aluminum alloy containing (in wt.%) >17 to 33% chromium, 1.8 to <4.0% aluminum, 0.10 to 15.0% iron, 0.001 to 0.50% silicon, 0.001 to 2.0% manganese, 0.00 to 0.60% titanium, 0.0002 to 0.05% each of magnesium and/or calcium, 0.005 to 0.12% carbon, 0.001 to 0.050% nitrogen, 0.0001 to 0.020% oxygen, 0.001 to 0.030% phosphorus, not more than 0.010% sulfur, not more than 2.0% molybdenum, not more than 2.0% tungsten, the remainder nickel with nickel ≥ 50% and the usual process-related impurities, for use in solar power tower plants using nitrate salt melts as the heat transfer medium, wherein the following relations must be satisfied: Fp ≤ 39.9 (2a) with Fp = Cr + 0.272*Fe + 2.36*Al + 2.22*Si + 2.48*Ti + 0.374*Mo + 0,538*W - 11.8*C (3a), wherein Cr, Fe, Al, Si, Ti, Mo, W and C is the concentration of the respective elements in % by weight.
The invention relates to a powder wherein the contents (in wt.%) are defined as follows: C max. 0.5 %, S max. 0.15 %, in particular max. 0.03 %, N max. 0.25 %, Cr 14 - 35 %, in particular 17 - 28 %, Ni radical (> 38 %), Mn max. 4 %, Si max. 1.5 %, Mo > 0 - 22 %, Ti < 4 %, in particular < 3.25 %, Nb up to 6.0 %, Cu up to 3 %, in particular up to 0.5 %, Fe < 50 %, P max. 0.05 %, in particular max. 0.04 %, AI up to 3.15 %, in particular up to 2.5 %, Mg max. 0.015 %, V max. 0.6 %, Zr max. 0.12 %, in particular max. 0.1 %, W up to 4.5 %, in particular up to max. 3 %, Co up to 28 %, B < 0.125 %, O > 0.00001 - 0.1 % and impurities due to production, wherein Ni + Fe + Co represents 56 - 80 % Nb + Ta < 6.0 %.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
15.
NICKEL BASED ALLOY FOR POWDER AND METHOD FOR PRODUCING A POWDER
The invention relates to a nickel-based alloy for powder, wherein the contents (in wt.%) are defined as follows: C 0.01 - 0.5 %, S max. 0.5 %, in particular max. 0.03%, Cr 20 - 25 %, Ni radical Mn max. 1 %, Si max. 1 %, Mo up to 10 %, Ti 0.25 - 0.6 %, Nb up to 5.5 %, Cu up to 5 %, in particular up to 0.5%, Fe up to 25 %, P max. 0.03%, in particular max. 0.02 %, AI 0.8 - 1.5 %, V max. 0.6 %, Zr max. 0.12 %, in particular max. 0.1 %, Co up to 15 %, B 0.001 - 0.125 % O >0.00001 - 0.1% and impurities dependent on production. Wherein the carbon to boron ratio (C/B) is between 4 and 25.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
B33Y 70/00 - Materials specially adapted for additive manufacturing
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
16.
POWDER CONSISTING OF A NICKEL-COBALT ALLOY, AND METHOD FOR PRODUCING THE POWDER
The invention relates to a nickel-cobalt alloy for powders, the contents (in wt%) being defined as follows: C > 0 - max. 0.1%, S max. 0.015%, Cr 13-23%, Ni remainder (> 30%), Mn max. 1.0%, Si max. 1.0%, Mo 1-6%, Ti > 0-3%, Nb+Ta 3-8%, Cu max. 0.5%, Fe > 0 - max. 10%, AI > 0 - < 4.0%, V to 4%, Zr > 0 - max. 0.1%, Co > 12 - < 35%, W to 4%, Hf to 3.0%, O max. 0.1%, N > 0 - max. 0.1%, Mg > 0 - max. 0.01%, B > 0 - max. 0.02%, P > 0 - max. 0.03%, Ar 0 - max. 0.08%, Se max. 0.0005%, Bi max. 0.00005%, Pb max. 0.002%.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
17.
NICKEL ALLOY HAVING GOOD RESISTANCE TO CORROSION AND HIGH TENSILE STRENGTH, AND METHOD FOR PRODUCING SEMI-FINISHED PRODUCTS
The invention relates to a nickel alloy comprising (in wt.%) Ni 50 - 55%, Cr 17 - 21%, Mo > 0 - 9%, W 0 - 9%, Nb 1 - 5.7%, Ta > 0 - 4.7%, Ti 0.1 - 3.0%, AI 0.4 - 4.0%, Co max. 3.0%, Mn max. 0.35%, Si max. 0.35%, Cu max. 0.23%, C 0.001 - 0.045%, S max. 0.01%, P 0.001 - 0.02%, B 0.001 - 0.01%, the remainder consisting of Fe and the conventional process-related impurities, wherein the following relations are provided: Nb + Ta 1 - 5.7% (1), AI + Ti > 1.2- 5% (2), Mo + W 3 - 9% (3), where Nb, Ta, Al and Ti are the concentration of the elements in question in wt.%.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
The invention relates to a cross clamp consisting of a plurality of profiled metal components made from a CuNiSi alloy, the profiles of which are formed in such a manner that, in a configuration in which the components face one another, recesses are formed to receive a plurality of wire cables made from an Al alloy, with at least the surface sections of the profiles facing the wire cables being provided with a material which corresponds at least as far as possible to the material of the wire cables, with at least the component profiles facing the wire cables being coated with an Al alloy such that at least the component profiles facing the wire cables are coated with an Al alloy coating by cold gas spraying.
F16G 11/06 - Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with laterally-arranged screws
F16G 11/14 - Devices or coupling-pieces designed for easy formation of adjustable loops, e.g. choker hooks; Hooks or eyes with integral parts designed to facilitate quick attachment to cables or ropes at any point, e.g. by forming loops
H01R 4/38 - Clamped connections; Spring connections using a clamping member acted on by screw or nut
H01R 4/46 - Clamping area between two screws placed side by side
19.
METHOD AND DEVICE FOR HOT-FORMING METALLIC PRE-PRODUCTS
The invention relates to a method for hot-forming preheated elongated metallic pre-products (2), by a pre-heated pre-product being guided repeatedly through at least one forming tool (1) and the pre-product (2) then being fed to a surface re-heating, in such a way that an apparatus (3) for the controlled production of heat can be positioned before or after the forming tool (1), after a first forming operation, the pre-product (2) is fed into the apparatus (3) or through the apparatus, the direction of movement of the pre-product (2) being reversed and a further forming operation with subsequent surface re-heating if required being brought about in the further apparatus (3).
Use of a nickel-chromium-aluminium alloy as powder for additive manufacturing, wherein the powder consists of spherical particles of a size of 5 to 250 pm, and wherein this alloy consists of (in % by weight) 24 to 33% chromium, 1.8 to 4.0% aluminium, 0.10 to 7.0% iron, 0.001 to 0.50% silicon, 0.005 to 2.0% manganese, 0.00 to 0.60% titanium, 0.0 to 0.05% magnesium and/or calcium respectively, 0.005 to 0.12% carbon, 0.001 to 0.050% nitrogen, 0.00001 - 0.100% oxygen, 0.001 to 0.030% phosphorus, a maximum of 0.010% sulfur, a maximum of 2.0% molybdenum, a maximum of 2.0% tungsten, the remainder nickel and the usual process-related impurities, wherein, with a pore size > 1 pm, the powder has total inclusions of 0.0 - 4% of the pore surface area.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
B33Y 70/00 - Materials specially adapted for additive manufacturing
The invention relates to an iron-chromium-nickel alloy consisting of (in wt.%): C > 0.02 - 0.40 %, S maximum 0.03 %, N maximum 0.1 %, Cr 15 - 25 %, Ni 10 - 20 %, Mn 0.5 - 2.0 %, Si 0.1 - 1.0%, Mo maximum 0.3 %, Ti 0.01 - 3.0 %, Nb maximum 0.05 %, Cu maximum 0.05 %, P maximum 0.045 %, AI maximum 0.15 %, Mg maximum 0.05 %, Ca maximum 0.1 %, V maximum 0.05 %, Zr maximum 0.05 %, W 0.01 - 3.0 %, Co maximum 0.2 %, B 0.2 - 3.0 %, O maximum 0.1 %, the remainder consisting of Fe and impurities due to melting.
The invention relates to a method for producing semi-finished products from a nickel-based alloy having the following composition (in wt.%): Ni > 50 - < 55%, Cr > 17 - < 21%, Nb > 4.8 - < 5.2%, Mo > 2.8 - < 3.3%, Ti > 0.8 - < 1.15%, Al > 0.4 - < 0.6%, C maximum 0.045%, Co maximum 1.0%, Mn maximum 0.35%, Si maximum 0.35%, S maximum 0.01%, Cu maximum 0.3%, the remainder consisting of iron and unavoidable impurities, wherein the following elements are added in the ranges specified: B 0.0001 - 0.01%, P 0.0001 - 0.02%. In said method: the alloy is melted, or remelted as required, in order to produce preliminary products; the preliminary products are made to undergo at least one hot-forming process; the preliminary products are subsequently made to undergo a multi-stage annealing and aging treatment, a solution heat treatment being carried out in a temperature range of between 1000 and 1100°C for a period of time of between 1 and 3 hours; the preliminary products are cooled in air, water or oil; the preliminary products are made to undergo a precipitation hardening process in a temperature range of between 650°C - < 770°C for a period of time of 5 to 9 hours; and the preliminary products are cooled to room temperature, the intermediate products being made to undergo, if necessary, at least one further heating process.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
A welding filler material comprising (in wt.-%): C 0.01 - 0.05 %; N 0.05 - 0.10 %; Cr 20.0 - 23.0 %; Mn 0.25 - 0.50 %; Si 0.04 - 0.10 %; Mo 8.0 - 10.5 %; Ti 0.75 - 1.0 %; Nb 3.0 - 5.0 %; Fe max.1.5 %; Al 0.03 - 0.50 %; W 4.0 - 5.0 %; Ta max. 0.5 %; Co max. 1.0 %; Zr 0.10 - 0.70 % Ni remainder; and impurities resulting from the smelting process.
The invention relates to a method for preparing a nickel-based alloy, in which method: - an electrode is produced by means of VIM, VOF or VLF; - the electrode is heat-treated in a furnace in a temperature range of between 500 and 1300°C for a period of time of 10 to 336 hours in order to reduce stresses and aging, the heat-treatment being carried out for at least 10 hours and a maximum of 48 hours in a temperature range of 1000°C to 1300°C; - the electrode is cooled in air or in the furnace to a temperature of between room temperature and less than 900°C; - the cooled electrode is then remelted by way of ESR at a remelting rate of 3.0 to 10 kg/minute to form an ESR block; - the ESR block is cooled in air or in the furnace to a temperature of between room temperature and less than 900°C, and the ESR block is remelted again by way of VAR at a remelting rate of 3.0 to 10 kg/minute and a fluctuation range of the remelting rate of less than 15%, better still 10%, ideally 5%; - the remelted VAR block is heat-treated in a temperature range of between 500 and 1250°C for a period of time of 10 to 336 hours; - the VAR block is then shaped into the desired product shape and dimension by way of hot forming or cold forming.
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
The invention relates to methods for producing nickel alloys having optimized strip weldability (TIG without additive) from an alloy having the following composition (in wt%): C max. 0.05% Co max. 2.5% Ni remainder, in particular ᡶ 35 - 75.5% Mn max. 1.0% Si max. 0.5% Mo ᡶ 2 - 23% P max. 0.2% S max. 0.05% N until 0.2% Cu ≤ 1.0% Fe ᡶ 0 - ≤ 7.0% Ti ᡶ 0 - ឬ 2.5% AI ᡶ 0 - 0.5% Cr ᡶ 14 - ឬ 25% V max. 0.5% W to 3.5% Mg to 0.2% Ca to 0.02%, wherein the alloy is open-melted and cast into blocks, the blocks are subjected to at least one heat treatment as required, the blocks are then remelted at least once by ESR, the remelted block thus obtained is subjected to at least one heat treatment as required, the block is subjected to at least one cold and/or hot reshaping operation until strip material of predeterminable material thickness is produced, and the strip material is divided into defined lengths/widths to form strips.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
The invention relates to the use of an alloy having the following composition (in wt. %): Cr 20.0 - 23,0%, Mo 18.5 - 21.05%, Fe ≤ 1.5%, Mn ≤ 0.5%, Si ≤ 0.1%, Co ≤ 0.3%, W ≤ 0.3%, Cu ≤ 0.5%, AI ≤ 0.4%, C ≤ 0.01%, P ≤ 0.015%, S ≤ 0.01%, N 0.02 - 0.15%, if required V ≤ 0.3%, Nb ≤ 0.2%, Ti ≤ 0.02%, remainder being Ni, in addition to smelting-relates impurities as plating material in thermal treatment installations and replacement material combustion installations.
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
A method for producing a roll-bonded metal sheet comprises bringing together a metallic main material layer and a metallic plating material layer to produce a layer stack. The layer stack is then heated. This is followed by thermomechanical rolling of the heated layer stack, comprising: a first rolling phase for rough rolling the heated layer stack to form a metallurgical bond between the metallic main material layer and the metallic plating material layer; a second rolling phase for finally forming the layer stack; and a cooling period between the first rolling phase and the second rolling phase. The chemical composition of the plating material has a content in mass % of Nb ≤ 3.1, preferably of Nb ≤ 2.8, in particular of Nb + Ta ≤ 2.8. The final rolling temperature of the second rolling phase is set to a value less than or equal to 880°C, in particular 850°C.
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
C21D 8/04 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
Use of a corrosion-resistant powder composed of (in percent by weight): C maximum 0.02 %; S maximum 0.01 %; Cr 18 - 30 %; Ni 22 - 34 %; Mn 0.5 - 2 %; Si 0.1 - 0.5 %; Mo 6.0 - 7.5 %; Ti maximum 0.1 %; Nb maximum 0.1 %; Cu 0.5 - 1.5 %; P maximum 0.03 %; Al ᡶ 0 - 0.5 %; Mg maximum 0.008 %; SE maximum 0.08 %; W maximum 0.5 %; Co maximum 0.5 %; B ᡶ 0 - 0.008 %; the remainder consisting of Fe and process-related oxygen and nitrogen moieties; for components produced by additive manufacturing.
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
C22C 33/02 - Making ferrous alloys by powder metallurgy
30.
METHOD FOR PRODUCING A NICKEL-IRON-CHROMIUM-ALUMINIUM WROUGHT ALLOY WITH INCREASED ELONGATION IN THE TENSILE TEST
Method for producing a nickel-iron-chromium-aluminium alloy comprising (in % by weight) 12 to 40% chromium, 0 to 4.0% aluminium, 0.01 to 75.0% iron, 0.001 to 3.0% silicon, 0.001 to 4.0% manganese, 0.0 to 1.0% titanium, 0.0001 to 0.05% magnesium and/or calcium, 0.005 to 0.25% carbon, 0.0005 to 0.050% nitrogen, max. 0.020% oxygen, max. 0.030% phosphorus, max. 0.010% sulphur, optionally 0 to 4% niobium, optionally 0 to 30% molybdenum, optionally 0 to 30% tungsten, optionally between 0.0 and 15.0% cobalt, optionally between 0 and 0.008% boron, the remainder nickel and the usual process-related impurities, a) by means of melting in an induction or arc furnace followed by treatment in a VOD or VLF installation or by means of melting in a vacuum induction furnace (VIM), b) followed by cleaning by means of electroslag remelting (ESR), optionally also additionally cleaning with VAR, wherein the electroslag remelting, optionally also VAR, achieves increased elongation in tensile testing in the temperature range from 500 to 900°C, which leads to a reduction in the sensitivity to stress relaxation cracks (SRC) in this temperature range.
The invention relates to a titanium alloy with high oxidation resistance and a stabilized grain structure, said alloy having the following composition: (in wt. %) Si 0.01 - 0.8 %, Fe ≤ 2 %, Nb 0.01 - 0.4 %, Hf 0.03 - 0.2 %, O ≤ 0.3 %, C ≤ 0.1 %, N ≤ 0.1 %, remainder Ti, in addition to smelting-related impurities and optionally one or more elements from the group comprising Mo, Ta, Zr, Mn, Cr, Co, Ni, Cu, V, H, Al in amounts totalling a maximum 3 %.
Titanium-free alloy which has great resistance to pitting and crevice corrosion and a high yield point in the strain-hardened state and comprises (in wt%) a maximum of 0.02% C, a maximum of 0.01% S, a maximum of 0.03% N, 20.0-23.0% Cr, 39.0-44.0% Ni, 0.4 - < 1.0 % Mn, 0.1 - < 0.5 % Si, > 4.0 - < 7.0 % Mo, a maximum of 0.15 % Nb, > 1.5 - < 2.5 % Cu, 0.05 - < 0.3 % Al, a maximum of 0.5 % Co, 0.001 - < 0.005 % B, 0.005 - < 0.015 % Mg, the remainder consisting of Fe and smelting-related impurities.
The invention relates to hardened nickel-chromium-titanium-aluminum wrought alloy with good wear resistance as well as very good resistance to corrosion at a high temperature, good creep resistance, and good workability containing, (in mass %) 5 - 35% chromium, 1.0 - 3.0% titanium, 0.6 - 2.0% aluminum, 0.005 - 0.10% carbon, 0.0005 - 0.050% nitrogen, 0.0005 - 0.030% phosphorus, max. 0.010% sulfur, max. 0.020% oxygen, max. 0.70% silicon, max. 2.0% manganese, max. 0.05% magnesium, max. 0.05% calcium, max. 2.0% molybdenum, max. 2.0% tungsten, max. 0.5 % niobium, max. 0.5% copper, max. 0.5 % vanadium, if required, 0 - 20% Fe, if required, 0 - 15% cobalt, if required 0 - 0.20% Zr, if required 0.0001 - 0.008% boron, the remainder being nickel and the usual impurities related to the method. The nickel content is greater than 35%. The relation of Cr + Fe + Co ≥ 26% (1) must be fulfilled in order to achieve good wear resistance and the relation fh ≥ 0 (2a) in which fh = 6.49 + 3.88 Ti + 1.36 AI - 0.301 Fe + (0.759 - 0.0209 Co) Co - 0.428 Cr - 28.2 C (2) must be fulfilled so that a sufficient solidness at high temperatures is obtained, Ti, AI, Fe, Co, Cr and C corresponding to the concentration of the relevant elements in mass % and fh in %.
Hardening wrought nickel-chromium-cobalt-titanium-aluminium alloy with very good wear resistance combined with very good creep strength, good high-temperature corrosion resistance and good processability, said alloy comprising (in % by mass) > 18 to 31% chromium, 1.0 to 3.0% titanium, 0.6 to 2.0% aluminium, > 3.0 to 40% cobalt, 0.005 to 0.10% carbon, 0.0005 to 0.050% nitrogen, 0.0005 to 0.030% phosphorus, max. 0.010% sulphur, max. 0.020% oxygen, max. 0.70% silicon, max. 2.0% manganese, max. 0.05% magnesium, max. 0.05% calcium, max. 2.0% molybdenum, max. 2.0% tungsten, max. 0.5% niobium, max. 0.5% copper, max. 0.5% vanadium, optionally 0 to 20% Fe, optionally 0 to 0.20% Zr, optionally 0.0001 to 0.008% boron, remainder nickel and the conventional process-related impurities, wherein the nickel content is greater than 35%, wherein the relationship Cr + Fe + Co ≥ 25% (1) has to be satisfied in order to achieve good wear resistance, and the relationship fh ≥ 0 (2a), where fh = 6.49 + 3.88 Ti + 1.36 Al - 0.301 Fe + (0.759 - 0.0209 Co) Co - 0.428 Cr - 28.2 C, (2) has to be satisfied in order that an adequate strength at higher temperatures is provided, wherein Ti, Al, Fe, Co, Cr and C are the concentration of the elements in question in % by mass and fh is given in %.
Hardening wrought nickel-chromium-iron-titanium-aluminium alloy with very good wear resistance combined with good creep strength, good high-temperature corrosion resistance and good processability, said alloy comprising (in % by mass) > 18 to 31% chromium, 1.0 to 3.0% titanium, 0.6 to 2.0% aluminium, > 3.0 to 40% iron, 0.005 to 0.10% carbon, 0.0005 to 0.050% nitrogen, 0.0005 to 0.030% phosphorus, max. 0.010% sulphur, max. 0.020% oxygen, max. 0.70% silicon, max. 2.0% manganese, max. 0.05% magnesium, max. 0.05% calcium, max. 2.0% molybdenum, max. 2.0% tungsten, max. 0.5% niobium, max. 0.5% copper, max. 0.5% vanadium, optionally 0 to 15% Co, optionally 0 to 0.20% Zr, optionally 0.0001 to 0.008% boron, remainder nickel and the conventional process-related impurities, wherein the nickel content is greater than 35%, wherein the relationship Cr + Fe + Co > 25% (1) has to be satisfied in order to achieve good wear resistance, and the relationship fh > 0 (2a), where fh = 6.49 + 3.88 Ti + 1.36 Al - 0.301 Fe + (0.759 - 0.0209 Co) Co - 0.428 Cr - 28.2 C, (2) has to be satisfied in order that an adequate strength at higher temperatures is provided, wherein Ti, Al, Fe, Co, Cr and C are the concentration of the elements in question in % by mass and fh is given in %.
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