Toward a further understanding of intermittent plastic responses in the compressed single/bicrystalline micropillars
Toward a further understanding of intermittent plastic responses in the compressed single/bicrystalline micropillars
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DOI：
10.1016/j.scriptamat.2012.02.023
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发表时间：
2012-05
影响因子：
6
通讯作者：
H. Fan;Zhenhua Li;Minsheng Huang
中科院分区：
文献类型：
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作者：
H. Fan;Zhenhua Li;Minsheng Huang
采用三维离散位错动力学方法对两种单晶和双晶微柱的压缩性能进行了比较模拟。双晶微柱特别考虑了位错可穿透纯倾斜晶界（GB）模型。计算捕获了这两种微柱在位移控制方式下的不同间歇塑性行为。讨论了其基本机理，并与实验进行了详细的比较。
The compressive properties of two single- and bicrystalline micropillars are comparatively modeled through three-dimensional discrete dislocation dynamics. A dislocation-penetrable pure tilt grain boundary (GB) model is especially taken into account in the bicrystalline micropillar. Different intermittent plastic behaviors of these two micropillars compressed in a displacement-controlled manner are computationally captured. The underlying mechanisms are discussed and detailed comparisons with experiments are also made.