镁中不同取向{1012}<1011>纳米孪晶镁单轴加载的分子动力学模拟
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摘要
利用分子动力学方法,对不同取向的{1012}<1011>孪晶界的纳米孪晶镁的单轴加载的力学行为进行了研究。结果表明,当加载方向与孪晶界垂直时,基面部分位错的发射和随后的相变主导变形过程。随着加载角度增大,变形过程逐渐转变为由孪晶位错主导的晶界迁移以及去孪生。此外,在单轴拉伸时可以观察到明显的由去孪生引起的应变强化。
引文
1 Song H-y,Li Y-l.Effect of twin boundary spacing on deformation behavior of nanotwinned magnesium[J].Physics Letters A,2012,376(4):529-533.
2 Zhang S,Zhou J,Wang L,Wang Y.The effect of the angle between loading axis and twin boundary on the mechanical behaviors of nanotwinned materials[J].Materials&Design,2013,45:292-299.
3 Jang D,Li X,Gao H,Greer J R.Deformation mechanisms in nanotwinned metal nanopillars[J].Nat Nano,2012,7(9):594-601.
2 Zhang S,Zhou J,Wang L,Wang Y.The effect of the angle between loading axis and twin boundary on the mechanical behaviors of nanotwinned materials[J].Materials&Design,2013,45:292-299.
3 Jang D,Li X,Gao H,Greer J R.Deformation mechanisms in nanotwinned metal nanopillars[J].Nat Nano,2012,7(9):594-601.