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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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