Abstract: A member includes a first metallic region made of a first material; a second metallic region made of a second material that is a different from the first material; and a mix region made of mixture of the first and second materials between the first and second metallic region. In a cross-sectional view, an interface between the first metallic region and the mix region is represented by a line having a first curved line protruding toward the first metallic region and a second curved line protruding toward the first metallic region, and an angle at a cross point of the first and second curved lines, the angle being made by a tangent line of the first curved line and a tangent fine of the second curved line in a region of the first metallic region, is equal to or larger than 70 degrees and smaller than 180 degrees.

Abstract: A method for manufacturing an additively manufactured body, which can suppress the occurrence of defects in the additively manufactured body, comprising: an additive manufacturing step of shaping an additively manufactured body in a heating state; and a machining step of machining the additively manufactured body in a state in which the heating state is maintained. The additively manufactured body can be shaped by the additive manufacturing step and the machining step which are repeated a plurality of times. The heating state is maintained also in the additive manufacturing step and the machining step which are repeated a plurality of times.

Abstract: The present disclosure provides a powder material that makes it possible to achieve higher flowability than before and to increase the crushing strength of particles. The powder material of the present disclosure has a dendritic structure 1. The dendritic structure 1 has a cemented carbide composition or a cermet composition.

Abstract: Provided is a cemented carbide composite material including cemented carbide and non-cemented carbide having better high-temperature strength than conventional materials and capable of suppressing breakage and peeling of the composite material. A cemented carbide composite material includes: a cemented carbide part including WC—Co-based cemented carbide; a substrate part including metal that contains at least one of Ni and Co that accounts for 50 mass % or more in total. This cemented carbide composite material has an intermediate layer between the cemented carbide composite material and the substrate part, the intermediate layer containing components of the cemented carbide part and components of the substrate part. The intermediate layer includes a part having a gamma phase fraction of 80% or more and having Vickers hardness less than 700 HV.

Abstract: Provided are: an alloy member that is excellent in homogeneity of both the alloy composition and microstructure and excellent in shape controllability and includes a high entropy alloy having high mechanical properties and high corrosion resistance, a process for producing the same, and a product including the alloy member. In the present invention, the alloy member having a chemical composition comprising elements of Co, Cr, Fe, Ni, and Ti each in an amount within a range of 5 atomic % or more and 35 atomic % or less and Mo in an amount within a range of more than 0 atomic % and 8 atomic % or less, the reminder consisting of unavoidable impurities, wherein ultrafine grains having an average grain diameter of 100 nm or less are dispersed and precipitated in a parent phase crystal.

Abstract: The present invention is intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay is formed along a surface of a base by laser lamination modeling, and is configured from a plurality of metal layers of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers is the largest in the metal layer closest to the base, and is gradually smaller in the metal layers farther away from the base. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer have a controlled size of 10 ?m or less.