Abstract: A Cu-based alloy powder is provided that is suitable for a process involving rapid-melting and rapid-solidification and can produce a shaped article having superior properties. The powder is made of a Cu-based alloy. The Cu-based alloy includes 0.1 to 5.0 mass % of at least one element M selected from V, Fe, Zr, Nb, Hf, and Ta. The balance in the alloy is Cu and inevitable impurities. The powder has a ratio D50/TD of a mean particle diameter D50 (?m) to a tap density TD (Mg/m3) in a range of 0.2×10?5·m4/Mg to 20×10?5·m4/Mg.

Abstract: Provided is a Cu-based alloy powder that is suitable for a process involving rapid melting and rapid solidification and that can provide a shaped object superior in characteristics. The powder is composed of a Cu-based alloy, which contains an element M being one or more elements selected from Cr, Fe, Ni, Zr, and Nb: 0.1% by mass or more and 10.0% by mass or less, Si: more than 0% by mass and 0.20% by mass or less, P: more than 0% by mass and 0.10% by mass or less, and S: more than 0% by mass and 0.10% by mass or less, the balance being Cu and inevitable impurities. This powder has a ratio (D50/TD) of the average particle diameter D50 (?m) thereof to the tap density TD (Mg/m3) is 0.2×10?5·m4/Mg or more and 20×10?5·m4/Mg or less, and has a sphericity of 0.80 or more and 0.95 or less.

Abstract: A Cu-based alloy powder is provided that is suitable for a process involving rapid-melting and rapid-solidification and can produce a shaped article having superior properties. The powder is made of a Cu-based alloy. The Cu-based alloy includes 0.1 to 5.0 mass % of at least one element M selected from V, Fe, Zr, Nb, Hf, and Ta. The balance in the alloy is Cu and inevitable impurities. The powder has a ratio D50/TD of a mean particle diameter D50 (?m) to a tap density TD (Mg/m3) in a range of 0.2×10?5·m4/Mg to 20×10?5·m4/Mg.

Abstract: An object of the present invention is to provide: a stainless steel powder which can be used in a powder-shaping method involving a rapid melting process and a rapid cooling process for solidification to produce a shaped article that is less susceptible to solidification cracking; a powder material for producing a shaped article, containing the stainless steel powder; and a method of producing a shaped article using the stainless steel powder, and, to achieve the object, the present invention provides a powder of a stainless steel, including: Cr in an amount of 10.5% by mass or more and 20.0% by mass or less; Ni in an amount of 1.0% by mass or more and 15.0% by mass or less; C, Si, Mn and N in a total amount of 0% by mass or more and 2.0% by mass or less; Mo, Cu and Nb in a total amount of 0% by mass or more and 5.0% by mass or less; and P and S in a total amount of 0% by mass or more and 0.

Abstract: The present invention provides a Ni-based superalloy powder for use in additive manufacturing, including, on the basis of mass %: 0 to 0.2% C; 0.05 to 1.0% Si; 0.05 to 1.0% Mn; 10.0 to 25.0% Cr; 0.01 to 10% Fe; 0.1 to 8.0% Al; 0.1 to 8.0% Ti; 0.002% or less S and/or 0.10% or less N; and the balance being Ni and incidental impurities. The Ni-based superalloy powder of the invention allows production of a good sintered body even during sintering by a rapid melting-rapid solidification process, such as additive manufacturing.

Abstract: There is provided a precipitation hardening stainless steel powder including, in percentage by mass: Si: ?1.0%; Mn: ?1.8%; Ni: 3.0 to 8.5%; Cr: 12.0 to 20.0%; Mo: 0.1 to 2.5%; Cu: 1.0 to 5.0% and/or Ti+Al: 1.0 to 5.0%; Nb+Ta?5C or Nb?5C; N?350 ppm; and the balance being Fe and incidental impurities. A sintered compact fabricated from the steel powder has a martensite content of 90% or more. The precipitation hardening stainless steel powder provides a sintered compact that exhibits high strength after aging.

Abstract: There is provided a precipitation hardening stainless steel powder including, in percentage by mass: Si: ?1.0%; Mn: ?1.8%; Ni: 3.0 to 8.5%; Cr: 12.0 to 20.0%; Mo: 0.1 to 2.5%; Cu: 1.0 to 5.0% and/or Ti+Al: 1.0 to 5.0%; Nb+Ta?5C or Nb?5C; N?350 ppm; and the balance being Fe and incidental impurities. A sintered compact fabricated from the steel powder has a martensite content of 90% or more. The precipitation hardening stainless steel powder provides a sintered compact that exhibits high strength after aging.