Deformation Twinning in Hexagonal Close-Packed Single Crystals under Uniaxial Compression
作者:    发表时间: 2016-02-25   阅读次数: 718次

Deformation Twinning in Hexagonal Close-Packed Single Crystals under
Uniaxial Compression

Kai Xiong, Yiyang Zhang and Jianfeng Gu

 

Keywords: Hexagonal close-packed crystal, Deformation twinning, Uniaxial compression,
Molecular dynamics.

Abstract: In this paper, the uniaxial compression of Mg, Ti, Zr and Co single crystals along the
[2 1 1 0] direction is performed by molecular dynamics (MD) to investigate the elastic-to-plastic
transition in these hexagonal close-packed (hcp) metals. Two deformation twinning modes are
observed in these simulations, including the (2 1 1 0) [0110] twinning in Ti, Zr and Co and the
(2 1 1 0) [0001] twinning in Mg. The underlying atomistic mechanisms of these twinning modes are
analyzed in detail.

doi:10.4028/www.scientific.net/MSF.850.379

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