|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-114: Microstructure Evolution and Enhanced Strength in CoCrFeMnNi Alloy through High Speed Shear Loading
||Toru Murata, Nobuhiro Imakura, Alok Singh, Ivan Gutierrez-Urrutia, Koichi Tsuchiya, Naoko Ikeo, Toshiji Mukai
|On-Site Speaker (Planned)
High entropy alloys (HEAs) have been expected to be used for structural applications due to their excellent mechanical properties. Since grain refinement is effective for strengthening the HEAs, ultra-fine-grained materials have been fabricated through various plastic deformation processes. The microstructure evolution is often dominated by cumulative shear deformation. In this study, effect of localized plastic strain was investigated on the microstructure evolution in a hat shape specimen of an equiatomic CoCrFeMnNi alloy. Localized shear deformation was applied to a fixed shear displacement in a wide range of strain rates. On the other hand, finite element analysis (FEA) was conducted under the same conditions as the experiments to predict strain distribution in the specimens. As a result, it was found that deformation twins and ultra-fine grains were formed according to the certain cumulative strain.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume