|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||Strong Grain-size Effect on Deformation Twinning of an Al0.1CoCrFeNi High-entropy Alloy
||Shiwei Wu, G. Wang, J. Yi, Q. J. Zhai, P. K. Liaw
|On-Site Speaker (Planned)
An Al0.1CoCrFeNi high-entropy alloy (HEA) with a face-cater-cubic structure in the as-cast and the recrystallized states is investigated. The mean grain size of the as-cast HEA is fourteen times larger than that of the recrystallized HEA. The tension tests reveal that deformation twinning is the main mechanism dominating the plastic deformation of two HEAs. With decreasing the grain size, twin spacing increases, and twin thickness decreases, which results in a low twinning activity. The twinning activity of the recrystallized HEA is strongly inhibited by grain refinement, which degrades the promotion of twinning on the strain-hardening ability and the tensile ductility.
||Planned: Supplemental Proceedings volume