[J] JIMM-ISIJ Joint Session Titan and Its Alloys

10:00 AM - 10:20 AM JST(1:00 AM - 1:20 AM UTC)

[J4] Single-Crystal Formation and Cellular-Dendritic Growth in Ti–42Nb Alloy Fabricated by Laser Powder Bed Fusion with a Flat-Top Laser

○Xinzhe Zhu^1,2, Tomonori Kitashima^1,2, Kohei Araake¹, Toshihiro Tsuchiyama², Makoto Watanabe¹ (1. NIMS, 2. Kyushu Univ.)

Keywords:

laser powder bed fusion,single crystal,cellular-dendritic growth,flat-top laser,Ti alloy

The relationship between the single-crystal growth process of β-type Ti–Nb alloys formed by flat-top-LPBF and the accompanying cellular dendrite growth behavior is not yet understood. In this study, we analyze the single-crystal growth and cellular dendrite growth behavior of a β-type Ti–42 wt.% Nb alloy in flat-top-LPBF.