|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||Work Hardening Behavior and Strain Localization in Single Crystalline High Entropy Alloys
||Sezer Picak, Ceylan Hayrettin, Jun Liu, Demircan Canadinc, Yury I. Chumlyakov, Ibrahim Karaman
|On-Site Speaker (Planned)
Tensile response of equiatomic CoCrFeMnNi and Fe40Mn40Co10Cr10 high entropy alloy single crystals oriented along the ,  and  directions were studied using digital image correlation (DIC) technique at room temperature. DIC and transmission electron microscopy (TEM) observations revealed that deformation twinning, planar slip, and cross slip govern the stress-strain responses. The activities of which strongly depends on the orientation of the samples. The interaction of the various twin/twin or twin/slip systems were identified via DIC analysis, which led further strain hardening rate. TEM analysis used to verify the deformation mechanisms determined by DIC analysis. Planar slip and twinning were the dominant deformation mechanisms along the  and  orientations as opposed to the  direction. Twinning begins at different strain levels depending on the crystallographic orientation. The critical resolved sheer stresses were calculated for twinning and slip using these single crystal responses.
||Planned: Supplemental Proceedings volume