Abstract
Atomistic simulations are utilized to demonstrate a stress-induced martensitic phase transformation in intermetallic nickel aluminum (NiAl) nanowires. The martensitic phase transformation occurs by the propagation and annihilation of {101} twinning planes and transforms the initially B2 NiAl nanowires to a body-centered tetragonal (BCT) phase. The instability of the resulting BCT phase allows pseudoelastic recovery of inelastic strains on the order of 40% at all deformation temperatures.
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