|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||The Strengthening Mechanisms for a Family of High-entropy and Equiatomic Solid-solution Alloys
||Zhenggang Wu, Yanfei Gao, Hongbin Bei
|On-Site Speaker (Planned)
To understand the underlying strengthening mechanisms, a large class of equiatomic or near equiatomic alloys with random solid-solution FCC structures has been recently developed and their mechanical properties were investigated. These alloys exhibit an unusual temperature-dependent strength, an unusual hardening behavior with respect to the crystallographic orientation, and extraordinary ductility at cryogenic conditions. Our analysis suggests that the Labusch-type solution strengthening mechanism, rather than the lattice friction (or lattice resistance), governs the deformation behavior in equiatomic alloys. A qualitative agreement exists between the measured strengthening effect and the Labusch strengthening factor based on the lattice and modulus mismatches. Consequently, the Labusch strengthening factor provides a practical parameter to understand and design such compositionally complex but structurally simple alloys.
Research supported by the US Department of Energy, BES, Materials Sciences and Engineering Division.
||Planned: Supplemental Proceedings volume