Atomistic simulations of the deformation behavior of an Nb nanowire embedded in a NiTi shape memory alloy

The influence of pre-strain and temperature on the superior properties exhibited by an Nb nanowire embedded in a NiTi shape memory alloy (SMA) are investigated via molecular dynamics simulations. To this end, new Nb-Ni-Ti ternary interatomic potential based second nearest-neighbor modified embedded-atom method (2NN MEAM) is developed employed. origin unique phenomena quasi-linear elasticity, slim hysteresis, reduction Young's modulus observed for pre-strained nanowire-SMA composites uncovered. results demonstrate importance plastic deformation nanowires reveal how facilitates just-mentioned, unprecedented phenomena. A simple straightforwardly obtainable descriptor to correlate monitor evolution during pre-straining proposed. Furthermore, our simulations suggest that desired can be obtained wide range application temperatures through appropriate pre-straining.