|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Multi-Principal Elements Alloys X
||Dislocation dynamics in particle hardened high-entropy alloys
||Ankit Roy, Helen M. Chan, JEFFREY M. RICKMAN, Ganesh Balasubramanian
|On-Site Speaker (Planned)
HEAs have garnered significant interest since their discovery in 2004 due to their potential for maintaining excellent mechanical properties at elevated temperatures. A potentially valuable approach to enhancing the mechanical behavior at both low and high temperatures is particle strengthening (PS). This study utilizes atomistic simulations to explore a novel variation of PS whereby rigid particles (core) are surrounded by a softer, more compliant outer layer (mantle). The results show the influence of the core-mantle particles on dislocation movement in an HEA matrix. Using these simulations the effect of the core radius and mantle thickness on the dislocation particle interactions have been studied, as well as the role of the particle distribution. These findings provide important design parameters for core-mantle particle strengthening of HEA alloys, and will guide the choice of an optimal particle system for a given HEA.