Effect of a high angle grain boundary on deformation behavior of Al nanopillars
Effect of a high angle grain boundary on deformation behavior of Al nanopillars
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DOI：
10.1016/j.scriptamat.2015.05.005
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发表时间：
2015-10
影响因子：
6
通讯作者：
Youbin Kim;Subin Lee;J. Jeon;Yong-Jae Kim;Byeong-Joo Lee;S. Oh;S. Han
中科院分区：
文献类型：
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作者：
Youbin Kim;Subin Lee;J. Jeon;Yong-Jae Kim;Byeong-Joo Lee;S. Oh;S. Han
采用[3 4 3]/[13 17 <$14]取向的Al双晶，研究了纳米柱中晶界夹杂的影响。非原位压缩的结果表明，在双晶柱比在单晶柱，这是解释相对于减少单臂源的长度，证实了在原位TEM测试中的强度更高。分子动力学模拟表明，晶界可以帮助位错形核，而不会导致位错堆积在边界。
The effect of inclusion of a grain boundary in nanopillar was studied using Al bicrystal with [3 4 3]/[13 17‾ 14] orientation. Ex situ compression results showed higher strengths in bicrystal pillars than in single crystal pillars, which is explained with respect to the reduced single-armed source length that was confirmed in the in situ TEM tests. Molecular dynamics simulations indicated that the grain boundary can assist in dislocation nucleations without resulting in dislocation pile-up at the boundary.