Abstract

The present invention relates to a 3D printed product of an iron based alloy having a narrow distribution of carbide areas and to a method of preparing the product where the HIP and hardening is combined.

IPC Classes  ?

• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• B22F 10/64 - Treatment of workpieces or articles after build-up by thermal means
• C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
• C22C 38/36 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon

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  ?

• B22F 1/12 - Metallic powder containing non-metallic particles
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• 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 10/50 - Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
• B22F 12/10 - Auxiliary heating means
• B22F 1/065 - Spherical particles
• C22C 33/02 - Making ferrous alloys by powder metallurgy
• C22C 38/36 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
• B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product

Abstract

The present invention relates to a 3D-printedcobalt-basedalloy product comprising carbon, tungsten and chromium with very good mechanical and thermal properties as well as a method of preparing the 3D-printedproductand 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  ?

• B22F 1/12 - Metallic powder containing non-metallic particles
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• 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 10/50 - Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
• B22F 10/66 - Treatment of workpieces or articles after build-up by mechanical means
• B22F 12/10 - Auxiliary heating means
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
• B22F 1/065 - Spherical particles
• C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
• 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