On the thermomechanical deformation of silver shape memory nanowires
HS Park and CJ Ji, ACTA MATERIALIA, 54, 2645-2654 (2006).
We present an analysis of the uniaxial thermornechanical deformation of single-crystal silver shape memory nanowires using atomistic simulations. We first demonstrate that silver nanowires can show both shape memory and pseudoelastic behavior, then perform uniaxial tensile loading of the shape memory nanowires at various deformation temperatures, strain rates and heat transfer conditions. The simulations show that the resulting mechanical response of the shape memory nanowires depends strongly upon the temperature during deformation, and can be fundamentally different from that observed in bulk polycrystalline shape memory alloys. The energy and temperature signatures of uniaxially loaded silver shape memory nanowires are correlated to the observed nanowire deformation, and are further discussed in comparison to bulk polycrystalline shape memory alloy behavior. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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