|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-18: Ab Initio Modeling of Peierls Potential of Screw Dislocations in bcc High-entropy Alloys
||Sheng Yin, Jun Ding, Mark Asta, Robert Ritchie
|On-Site Speaker (Planned)
In traditional body-centered cubic metals, core properties of screw dislocations play critical role in plastic deformation at low temperature. Recently, much attention has been attracted to the refractory high-entropy alloys, which are also dominated by bcc microstructures. However, there has been relatively little study on screw dislocation properties or the short-range order effect in this new type of alloys. Here, using density functional theory, we investigate the cores structures in refractory HEAs and explore the height, shape and distribution of Peierls potentials. Furthermore, we showed the effect of different degrees of short-range order on the Peierls potentials of dislocations.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume