Possibility of a vortex mechanism of displacement of the grain boundaries under high-rate shear loading

被引：28
|
作者：
Psakh'e, SG [1 ]
Zol'nikov, KP [1 ]
机构：
[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Div, Tomsk 634021, Russia
来源：
COMBUSTION EXPLOSION AND SHOCK WAVES | 1998年 / 34卷 / 03期
关键词：
Vortex; Fast Speed; Atomic Plane; Vortex Motion; High Deformation Rate;
D O I：
10.1007/BF02672735
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The behavior of the boundaries of grains of special type in the material during high-rate shear loading was studied numerically. Two paths of evolution of the simulated system were shown: an intense rearrangement of the intergrain boundary occurs at high deformation rates and the process of relaxation of: the energy supplied to the material is accomplished by displacing the boundary as the intensity of loading is decreased. The calculations showed that the intergrain boundary can be shifted with an abnormally fast speed. Vortex collective motion of the atoms causes high velocities of displacement of the grain boundaries.
引用
收藏
页码：366 / 368
页数：3
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