Investigation of the atomic-level microstructural evolution of quadruple-fused α/β titanium particles during sintering

Y Gao and Q Xie and TH Gao and WS Yang and LX Li and YT Liu and YC Liang and Q Chen and Z Tian, JOURNAL OF MOLECULAR LIQUIDS, 381, 121753 (2023).

DOI: 10.1016/j.molliq.2023.121753

The sintering dynamics of binary particles have been extensively studied; however, the sintering behavior of multiparticles still needs further investigation because it plays a key role in many industrial processes and advanced technologies. Herein, we used molecular dynamics simulations to investigate the sintering dynamics of quadruple titanium (Ti) particles. We investigated two particle arrangement configurations of Ti particles, alpha alpha beta beta and alpha beta alpha beta, at three sintering temperatures (900 K, 1300 K, and 2000 K) to explore the microstructural changes of Ti particles during sintering. Furthermore, we proposed a formula for calculating the fusion ratio of multiple particles. The results show that alpha alpha beta beta-Ti could retain its HCP structure when sintered at 1300 K and 900 K, whereas only BCC-Ti was observed after sintering at high temperatures. The effect of diffusion mechanisms was more substantial at high temperatures, and the higher the sintering temperature, the better the particle fusion effect. In addition to the effect of temperature on atomic migration, different particle arrangement configurations can impact atomic migration.

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