Influence of anisotropic elasticity on the mechanical properties of fivefold twinned nanowires
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- 作者：Florian Niekiel ; Erdmann Spiecker ; Erik Bitzek ; erik.bitzek@fau.de" class="auth_mail" title="E-mail the corresponding author
- 关键词：Fivefold twinning ; Numerical algorithms (C) ; Anisotropic material (B) ; Microstructures (A) ; Strengthening and mechanisms (A)
- 刊名：Journal of the Mechanics and Physics of Solids
- 出版年：2015
- 出版时间：November 2015
- 年：2015
- 卷：84
- 期：Complete
- 页码：358-379
- 全文大小：9037 K
文摘
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We propose a new theory for the mechanical properties of fivefold twinned nanowires.
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The Frank vector of the central wedge disclination is shown to be strain-dependent.
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The influence of the fivefold twinned structure on Young's modulus is revealed.
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The theory explains material-dependent deformation behavior in atomistic simulations.
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Furthermore, the size-dependence of the elastic properties of nanowires is addressed.