|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Deformation-induced Phase Transformation and Microstructure Evolution in CrCoNi Medium Entropy Alloy
||Hangman Chen, Penghui Cao
|On-Site Speaker (Planned)
High entropy or medium entropy alloys have drawn enormous attention due to their excellent mechanical behaviors. The CrCoNi medium entropy alloy stands out among this class of materials because of its exceptional damage tolerance and high strength-ductility synergy. We perform multiscale atomistic simulations to elucidate the deformation mechanisms, phase transformation, and nano-/micro-structure evolution in CrCoNi, responsible for its extraordinary mechanical performance. By analyzing deformation trajectory, we reveal the fundamental dislocation processes underlying twinning, martensitic transformation (FCC to HCP), and sub-grain structure evolution. The role of local chemical short-range order on these deformation mechanisms will also be discussed.
||High-Entropy Alloys, Modeling and Simulation, Phase Transformations