FE-BASED ALLOY, ALLOY MEMBER, PRODUCT, AND METHOD FOR MANUFACTURING ALLOY MEMBER

• Main Authors: OKAMOTO, Shinya, KOSEKI, Shuho
• Format: Patent
• Language: English; French; Japanese
• Published: 24.08.2023
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; ALLOYS; CASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

This Fe-based alloy has an alloy structure including C, Cr, W, Mo, and V, with the remainder made up by Fe and unavoidable impurities, and including a Fe-BCC phase and a W-Mo-concentrated phase. By mass, the Fe-BCC phase contains 3-7% of C, 2-6% of Cr, 0.5-8% of W, 3-8% of Mo, 2-20% of V, and 60-90% of Fe, and the W-Mo-concentrated phase contains 5-13% of C, 2-12% of Cr, 7-17% of W, 11-22% of Mo, 3-19% of V, and 40-50% of Fe. The W-Mo-concentrated phase is formed so as to surround the Fe-BCC phase. Cet alliage à base de fer présente une structure d'alliage comprenant C, Cr, W, Mo et V, le reste étant constitué de Fe et d'impuretés inévitables, et comprenant une phase Fe-BCC et une phase concentrée en W-Mo. En masse, la phase Fe-BCC contient 3-7 % de C, 2-6 % de Cr, 0,5-8 % de W, 3-8 % de Mo, 2-20 % de V et 60-90 % de Fe, et la phase concentrée en W-Mo contient 5-13 % de C, 2-12 % de Cr, 7-17 % de W, 11-22 % de Mo, 3-19 % de V et 40-50 % de Fe. La phase concentrée en W-Mo est formée de manière à entourer la phase Fe-BCC. Ｆｅ基合金は、Ｃ、Ｃｒ、Ｗ、Ｍｏ及びＶを含み、残部がＦｅ及び不可避不純物からなり、Ｆｅ－ＢＣＣ相及びＷ－Ｍｏ濃化相を含む合金組織を有し、質量％で、Ｆｅ－ＢＣＣ相は、Ｃが３％～７％、Ｃｒが２％～６％、Ｗが０．５％～８％、Ｍｏが３～８％、Ｖが２～２０％、Ｆｅが６０％～９０％であり、Ｗ－Ｍｏ濃化相は、Ｃが５％～１３％、Ｃｒが２％～１２％、Ｗが７％～１７％、Ｍｏが１１％～２２％、Ｖが３％～１９％、Ｆｅが４０％～５０％であり、Ｗ－Ｍｏ濃化相が、Ｆｅ－ＢＣＣ相を囲むように形成されている。