[S6] S6 Materials Science of Additive Manufacturing IX

3:30 PM - 3:50 PM JST(6:30 AM - 6:50 AM UTC)

[S6.9] Effect of cellular structures on mechanical properties of laser additively manufactured IN718

○Ken Cho¹, Kippei Yamashita¹, Takuma Saito², Taisuke Sasaki³, Takayoshi Nakano¹, Hiroyuki Y. Yasuda¹ (1. UOsaka, 2. Ruhr-University Bochum, 3. NIMS)

Keywords:

Laser powder bed fusion,Solidification segregation,Dislocation cell,Hall-Petch strengthening

Laser powder bed fusion yields Ni-base superalloys with unique hierarchical microstructures. This study focuses on the energy density to investigate the morphology and formation mechanism of the cellular structures within this hierarchy. Furthermore, their effects on the strengthening mechanism were elucidated.