FORMATION OF DEFORMATION TWINS THROUGH IDEAL NANOSHEAR EVENTS NEAR CRACK TIPS IN DEFORMED NANOCRYSTALLINE MATERIALS
FORMATION OF DEFORMATION TWINS THROUGH IDEAL NANOSHEAR EVENTS NEAR CRACK TIPS IN DEFORMED NANOCRYSTALLINE MATERIALS
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
N. Morozov;A. Sheinerman;N. Skiba
中科院分区：
文献类型：
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作者：
N. Morozov;A. Sheinerman;N. Skiba
从理论上描述了变形纳米晶材料裂纹尖端附近形变孪晶的形成。在建议的模型中，变形孪晶的产生和发展，通过理想的纳米剪切事件进行纳米扰动和高的局部应力在裂纹尖端附近发起。纳米级孪晶的形成部分地释放了裂纹尖端附近的局部应力，从而阻碍了预裂纹纳米晶体固体中的裂纹生长。
Formation of deformation twins near crack tips in deformed nanocrystalline materials is theoretical described. Within the suggested model, deformation twins are generated and evolve through ideal nanoshear events carried by nanodisturbances and initiated by high local stresses in the vicinities of crack tips. The nanoscale twin formation releases in part local stresses near crack tips and thus hampers crack growth in pre-cracked nanocrystalline solids.