Low-temperature instability of the plastic deformation of aluminum

被引：0
|
作者：
V. P. Lebedev
V. S. Krylovskiĭ
S. V. Lebedev
S. V. Savich
机构：
[1] Karazin Kharkov National University,
来源：
Physics of the Solid State | 2007年 / 49卷
关键词：
83.50.-v; 83.60.Wc;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The low-temperature instability of the plastic flow (step deformation) with a change in the state of the defect structure and geometric sizes of the polycrystalline aluminum specimen is investigated. It is demonstrated that the dependence of the magnitude of the step on the deforming stress exhibits an identical behavior for all the studied parameters of the specimens. A model is proposed for generating the step deformation of the metal, according to which there occurs a primary athermic overcoming of the potential barrier by a group of dislocations.
引用
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页码：2091 / 2098
页数：7
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