POWDER FOR LAYER-BY-LAYER ADDITIVE MANUFACTURING, AND PROCESS FOR PRODUCING OBJECT BY LAYER-BY-LAYER ADDITIVE MANUFACTURING

摘要

Provided is a powder that has improved flowability even when the powder contains a powder having low sphericity. This is achieved by the following means. A powder for additive manufacturing for use in producing a multi-layer shaped object by repeatedly forming a solidified layer by melting a powder spread in a layer by beam irradiation, comprising:a first metal powder having an average diameter of 10 µm or more but 200 µm or less; anda second powder whose sphericity is higher than that of the first metal powder and whose average diameter is 1/10 or less of that of the first metal powder, whereina volume fraction of the first metal powder is 99% or more and a volume fraction of the second powder is less than 1%.