[P] P88~P100 Materials Processing

[P94] Effects of Crystal Nucleation and Grain Growth Models on Prediction of Solidification Microstructure in LPBF of Ti-6Al-4V

○Kitamura Masanori¹, Takayuki Shiraiwa¹, Fabien Fabien² (1. The University of Tokyo, 2. NIMS)

Keywords:

Cellular Automaton,Ti-6Al-4V,LPBF,Additive Manufacturing,Microstructure

This study introduced a temperature-gradient-dependent nucleation model and a power-law grain growth equation into 3D-CA simulations for LPBF of Ti-6Al-4V. Results indicated that the competitive grain growth process dominates final microstructure formation rather than initial nucleation orientation.