Ni-Al-V BASED ALLOY MATERIAL, Ni-Al-X ALLOY PRODUCT AND METHOD FOR MANUFACTURING THE PRODUCT

• Main Authors: OTA ATSUO, KONNO SHINYA, IKEDA RYOHEI
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2023
• 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; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

To provide a Ni-Al based alloy β phase article having a controlled fine structure and an alloy material for obtaining the article.SOLUTION: A Ni-Al-X alloy material according to the present invention includes Al in an amount of 20 to 30 atom %, X of 10 to 35 atom %, and O of 100 to 300 mass ppm, and the balance of Ni and unavoidable impurities, wherein X is Fe, Co, Cr, or Ti, and segregation cells each having an average size of 0.3 μm or more and 5 μm or less are formed in the β phase crystal grains having a B2 structure, and in a boundary region of the segregation cells, a part of the constituent components of the Ni-Al-X alloy is segregated.SELECTED DRAWING: Figure 2 【課題】微細組織が制御されたNi-Al系合金β相物品および該物品を得るための合金材料を提供する。【解決手段】本発明に係るNi-Al-X系合金材料は、20原子％以上30原子％以下のAlと、10原子％以上35原子％以下のXと、100質量ppm以上300質量ppm以下のOと、Niおよび不可避不純物の残部とからなる合金組成を有し、前記XはFe、Co、CrまたはTiであり、B2構造を有するβ相の結晶粒の中に、平均サイズが0.3μm以上5μm以下の偏析セルが形成しており、該偏析セルの境界領域には前記Ni-Al-X系合金の構成成分の一部が偏析している、ことを特徴とする。【選択図】図２