|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Stability and Growth Kinetics of Deformation Twin Embryos in BCC Complex Concentrated Alloys
||Ganlin Chen, Liang Qi
|On-Site Speaker (Planned)
We employed computational tools to understand and further tune the effects of diffusionless phase transformations on twinnabilities in BCC complex concentrated alloys. First-principle calculations were firstly performed to study the atomic structures and energy stability of different metastable phases at their local-minimum states in different alloy compositions. Secondly, we applied atomistic simulations with classical interatomic potentials to further analyze the atomic structures of alloys at finite temperatures. Both first-principle calculations and atomistic simulation results are employed to construct the order parameters that can effectively describe the energy landscape and diffusionless phase 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 dynamics of deformation twinning under external loading conditions at different temperatures and further explore how the diffusionless phase transformations affect the deformation twinning activities in BCC complex concentrated alloys.
||Planned: Metallurgical and Materials Transactions