MOLECULAR DYNAMICS MODELLING OF BOUNDARY MIGRATION IN BICRYSTALS UNDER NANOBURNISHING

被引：0
|
作者：
Dmitriev, Andrey I. [1 ,2 ,3 ]
Nikonov, Anton Yu. [1 ,2 ]
机构：
[1] Russian Acad Sci, ISPMS, Akad Sky Pr 2-4, Tomsk 634021, Russia
[2] Natl Res Tomsk State Univ TSU, Tomsk 634050, Russia
[3] Natl Res Tomsk Polytech Univ TPU, Tomsk 634050, Russia
来源：
PARTICLE-BASED METHODS IV-FUNDAMENTALS AND APPLICATIONS | 2015年
关键词：
numerical modeling; molecular dynamics; nanostructuring burnishing; vortex-like displacements;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The paper reports the molecular dynamics simulation results on the behavior of a copper crystallite in local frictional contact. The crystallite has a perfect defect-free structure and contains a high-angle grain boundary of type Sigma 5. The influence of the initial structure on the specimen behavior under loading was analyzed. It is shown that nanoblocks are formed in the subsurface layer. The atomic mechanism of nanofragmentation was studied. A detailed analysis of atomic displacements in the blocks showed that the displacements are rotational. Calculations revealed that the misorientation angle of formed nanoblocks along different directions does not exceed 2 degrees.
引用
收藏
页码：248 / 254
页数：7
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