Abstract
Molecular dynamic simulation (MD) was used to study the compression behavior of nanotwinned polycrystalline Ni nanowires (NWs). An inverse Hall–Petch (HP) relation as a function of twin boundary spacing (TBS) is observed, which can be mainly understood in terms of a transition of the dominant intra-granular deformation mechanism. Through the simulations, we provide an atomic scale view of the entire process of compression deformation.
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