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arXiv · 1809.06822

Twinning-induced pseudoelastic behavior in (MoW)$_{85}$(TaTi)$_{7.5}$Zr$_{7.5}$

Aayush Sharma·Valery I. Levitas·Prashant Singh·Anup Basak·Ganesh Balasubramanian·Duane D. Johnson
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Abstract

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.

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Aayush Sharma, Valery I. Levitas, Prashant Singh, Anup Basak, Ganesh Balasubramanian, Duane D. Johnson. 2018-09-18. Twinning-induced pseudoelastic behavior in (MoW)$_{85}$(TaTi)$_{7.5}$Zr$_{7.5}$. https://arxiv.org/abs/1809.06822

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