|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Ultrafine-grained and Heterostructured Materials (UFGH XII)
||H-25: Microstructure Evolution Kinetics and Strengthening Mechanisms of the Partially Recrystallized High Entropy Alloys
||Feng He, Zhongsheng Yang, Zhijun Wang
|On-Site Speaker (Planned)
Recrystallization has been a major method to induce heterogeneous grain structure for improving the strength-ductility combination of single phase high entropy alloys (HEAs). However, the recrystallization kinetics of single phase HEAs, which are the guideline for controlling the recrystallization behavior, are still lack of attention. How the partially recrystallized structure affects the mechanical response also remains less explored. Here, we uncovered the recrystallization behaviors of typical Ni-Co-Cr-Fe HEAs. NiCoCrFe and Ni2CoCrFe exhibit almost similar recrystallization activation energy around 230 kJ·mol-1, but distinctively different recrystallization kinetics. Such difference in recrystallization behavior results in distinct mesoscale structures, leading to different mechanical resonpse.