[G] Powder sintering and additive manufacturing

[222] Microstructure control of SUS316L stainless steel by heterogeneous solidification in selective laser melting

*Satoshi Okubo¹, Kengo Fujimaki¹, Tomoki Yuasa², Hisashi Sato³, Yoshimi Watanabe³ (1. Tokyo Metropolitan Industrial Technology Research Institute, 2. Nagoya Institute of Technology (Present: Toyota Boshoku Corp.), 3. Nagoya Institute of Technology)

Keywords:ヘテロ凝固、SUS316L、積層造形、SrO

SUS316Lステンレス鋼のレーザ積層造形においてヘテロ凝固核粒子を添加して造形を行った．ヘテロ凝固核の効果により結晶粒が微細化し，低エネルギーの造形条件でも高強度化させることに成功した．