  We provide a critical atomistic evidence of pseudoelastic behavior in complex
solid-solution BCC Mo-W-Ta-Ti-Zr alloy. Prior to this work, only limited
single-crystal BCC solids of pure metals and quaternary alloys have shown
pseudoelastic behavior at low temperatures and high strain rates. The
deformation mechanisms investigated using classical molecular simulations under
tensile-compressive loading reveal temperature-dependent pseudoelastic behavior
aided by twinning during the loading-unloading cycle. The pseudoelasticity is
found to be independent of loading directions with identical cyclic deformation
characteristics during uniaxial loading. Additionally, temperature variation
from 77 to 1500 K enhances the elastic strain recovery in the alloy.
