Abstract

The present invention relates to a 3D-printed cobalt-based alloy product comprising carbon, tungsten and chromium with very good mechanical and thermal properties as well as a method of preparing the 3D-printed product and a powder alloy. The alloy has a high carbon content leading to high carbide content but small and evenly distributed carbides. A method facilitating 3D printing of high carbide content alloys such as the present alloy is also disclosed.

IPC Classes  ?

• C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
• B22F 1/065 - Spherical particles
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
• B22F 10/64 - Treatment of workpieces or articles after build-up by thermal means
• B23K 15/00 - Electron-beam welding or cutting
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• C22C 32/00 - Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
• B22F 10/362 - Process control of energy beam parameters for preheating
• B22F 10/66 - Treatment of workpieces or articles after build-up by mechanical means
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 80/00 - Products made by additive manufacturing

Abstract

A 3D printed product of an iron based alloy having a narrow distribution of carbide areas is disclosed, as well as a method of preparing the product where the HIP and hardening is combined.

IPC Classes  ?

• B22F 10/64 - Treatment of workpieces or articles after build-up by thermal means
• B33Y 80/00 - Products made by additive manufacturing
• B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
• C22C 38/36 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
• C22C 38/30 - Ferrous alloys, e.g. steel alloys containing chromium with cobalt
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten

Abstract

The present invention relates to a 3D-printed iron based alloy product comprising carbon, tungsten, vanadium, cobalt, chromium and molybdenum with very high hardness and very good high temperature properties thermal properties as well as a method of preparing the 3D-printed product and a powder alloy.

IPC Classes  ?

• C22C 33/02 - Making ferrous alloys by powder metallurgy
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B23K 26/12 - Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
• B23K 26/342 - Build-up welding
• B23K 15/00 - Electron-beam welding or cutting
• B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
• B23K 28/00 - Welding or cutting not covered by groups
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/30 - Ferrous alloys, e.g. steel alloys containing chromium with cobalt
• C22C 38/36 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
• B22F 10/64 - Treatment of workpieces or articles after build-up by thermal means
• B22F 10/34 - Process control of powder characteristics, e.g. density, oxidation or flowability
• B22F 10/50 - Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
• B22F 10/362 - Process control of energy beam parameters for preheating
• B22F 10/66 - Treatment of workpieces or articles after build-up by mechanical means
• B22F 1/065 - Spherical particles

Abstract

The present invention relates to a 3D-printed cobalt-based alloy product comprising carbon, tungsten and chromium with very good mechanical and thermal properties as well as a method of preparing the 3D-printed product and a powder alloy. The alloy has a high carbon content leading to high carbide content but small and evenly distributed carbides. A method facilitating 3D printing of high carbide content alloys such as the present alloy is also disclosed.

IPC Classes  ?

• B32B 15/00 - Layered products essentially comprising metal
• C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B23K 15/00 - Electron-beam welding or cutting
• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• C22C 32/00 - Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
• B22F 1/065 - Spherical particles
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 80/00 - Products made by additive manufacturing