| Abstract Scope |
The pursuit of strong and tough compositionally complex alloys (CCAs) has reignited interest in the strengthening mechanisms of random solid-solution alloys. Despite some theoretical advancements, direct modeling and statistically analyzing the plastic strength, or dislocation glide resistance, of random alloys remains challenging. To overcome these limitations, we develop a comprehensive atomistic modeling framework to investigate the critical stress for dislocation glide at both zero (i.e., without thermal activation) and finite temperatures (i.e., with thermal activation). Additionally, we develop a coarse-grained modeling framework, informed by direct atomistic simulations, to reduce the computational cost, enabling statistical analysis of the yield strength of random alloys. Our new frameworks offer a promising avenue for exploring how the yield strength of random alloys depends on composition, chemical ordering, temperature, and strain rate, while also facilitating the design of stronger CCAs. |