|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Characteristics of Edge Dislocations and their Glide in FCC NiCoFe and NiCoFeCu Equiatomic Solid Solution Alloys
||Wei Li, Satish I. Rao, Jaafar A. El-Awady
|On-Site Speaker (Planned)
The critical stresses and core structures of 1/2<110> edge dislocations in face centered cubic NiCoFe and NiCoFeCu equiatomic solid solution alloys is investigated using both molecular statics and molecular dynamics simulations at different temeratures (10, 150 and 300K). The computed intrinsic stacking fault energies (ISF) was predicted to be 17 and 28 mJ/m^2 for the NiCoFe and NiCoFeCu alloy, respectively. The dislocation stacking fault width in both crystals is shown to vary along the dislocation length due to fluctuations in the local atomic concentrations. The critical stress for dislocation glide as a function of temperature was also predicted for both alloys and the characteristics of dislocation glide will be discussed. Finally, the results are discussed in terms of a theoretical model for solid solution strengthening.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume