[G] Solid process/Solid and welding process

[70] 0

*Lingxiao OUYANG¹, Yufan Zhao², Yuji Imamiya³, Kenta Aoyagi², Akihiko Chiba² (1. Tohoku Univ.、2. IMR, Tohoku Univ.、3. Mitsubishi Heavy Industries Machine Group.)

Keywords:Directed Energy Deposition、Ti-6Al-4V、Grain structure control、Columnar to equiaxed transition

The CtFD simulations provide us real-time temperature gradient G and solidification rate R during the solidification and we use the ratio of to G/R and G×R to control grain structure.