|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||Computational Studies of Deformation Twinning in Metastable Titanium Alloys
||Ganlin Chen, Liang Qi
|On-Site Speaker (Planned)
We applied computational studies to understand and tune the effects of diffusionless phase transformations on deformation twinning activities in beta Ti alloys. First-principle calculations were firstly performed to study the structures and energy stability of different phases (omega, beta, and alpha’’, etc.) at their local-minimum states in different alloy compositions. Secondly, we applied atomistic simulations with classical interatomic potentials to further analyze the structures of Ti binary alloys at finite temperatures. Both first-principle calculations and atomistic simulation results are used to construct the order parameters that can effectively describe the energy landscape and diffusionless transformation paths between multiple phases. Thirdly, with the aid of atomistic simulations and crystallographic theories, we investigate the energy landscape of the nucleation and growth of multiple types of deformation twinning in beta Ti alloys at finite temperatures and further explore how the diffusionless phase transformations affect the deformation twinning activities.
||Titanium, Modeling and Simulation, Mechanical Properties