Metal powder, method of producing additively-manufactured article, and additively-manufactured article

Abstract

A metal powder for additive manufacturing includes: not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and a balance including copper and an incidental impurity.

What is claimed is: 
     
         1 . A metal powder for additive manufacturing, the metal powder comprising:
 not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and   a balance including copper and an incidental impurity.   
     
     
         2 . A method of producing an additively-manufactured article, the method comprising:
 a first step of forming a powder layer including a metal powder as recited in  claim 1 ; and   a second step of forming a shaped layer by solidifying the metal powder at a predetermined position in the powder layer,   the first step and the second step being successively repeated to stack the shaped layers and produce an additively-manufactured article.   
     
     
         3 . The method of producing an additively-manufactured article according to  claim 2 , further comprising a heat treatment step of heat-treating the additively-manufactured article. 
     
     
         4 . An additively-manufactured article made from a copper alloy,
 the copper alloy comprising:
 not less than 0.2 mass % and not more than 1.3 mass % of aluminum; and 
 a balance including copper and an incidental impurity, 
   the additively-manufactured article having a relative density of not less than 96% and not more than 100% with respect to a theoretical density of the copper alloy, and   the additively-manufactured article having an electrical conductivity of not less than 30% IACS.   
     
     
         5 . The additively-manufactured article according to  claim 4 , wherein
 the electrical conductivity is not less than 50% IACS.