[P] 第7分野　生体・医療・福祉　P37～P41

[P37] Influence of Hatch Spacing on Texture Evolution and Heat Accumulation in Laser Powder Bed Fused Tantalum

○NUR ZULAIKHA Binti Mohamad Zaidi¹, Ozkan Gokcekaya¹, Takayoshi Nakano¹ (1. The University of Osaka)

Keywords:

Laser Powder Bed Fusion (L-PBF),Crystallographic Texture,Body-Centered Cubic (BCC) Structure,Refractory Metals

Optimized hatch spacing in laser powder bed fused tantalum promotes heat accumulation, near-full densification, and a texture shift from {110} to {112}. Reduced spacing enhances melt overlap, dislocation alignment, and grain boundary coherence, yielding uniform hardness and minimized porosity under controlled energy input.