|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Microstructure and Deformation Behavior of a MoReW Medium Entropy Alloy
||Oleg N. Senkov, Satish I. Rao, Glenn H. Balbus, Robert Wheeler
|On-Site Speaker (Planned)
||Oleg N. Senkov
Microstructure and mechanical properties of an equiatomic MoReW alloy, which has demanding combination of strength and ductility in the temperature range of 25°C to 1200°C, are reported. The alloy has a weak temperature dependence of yield stress resulting in remarkably good yield stress retention at high temperatures, and it shows strong strain hardening. Extensive deformation twinning occurred at the beginning of deformation and activation of other deformation modes at later deformation stages in this temperature range. To understand and explain the observed behaviors of the alloy, a detailed analysis of strengthening mechanisms associated with screw and edge dislocation glide, as well as with twin nucleation and propagation, has been conducted and reasonable qualitative models of yielding, strain hardening and ductility of the studied MoReW alloy have been proposed.
||Planned: Metallurgical and Materials Transactions