DISLOCATION KINETICS DURING PLASTIC DEFORMATION OF TWO-DIMENSIONAL POLYCRYSTALS

被引：0

作者：

Badiyan, E. E. ^{[1
]}

Tonkopryad, A. G. ^{[1
]}

Ftomov, Ye, V ^{[1
]}

Shekhovtsov, O., V ^{[1
]}

机构：

[1] Kharkov Natl Univ, Kharkov, Ukraine

来源：

PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY | 2019年 / 02期

关键词：

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The dislocation-kinetic approach is applied to the study of plastic flow of plate specimens of two-dimensional polycrystals of high purity metals under uniaxial tension with a constant strain rate at moderate temperatures. A dislocation-kinetic equation is formulated. It takes into account the role of the free surface of a plate specimen, which is the source and sink of dislocations, and the strengthening effect of through grain boundaries in a two-dimensional polycrystal. To calculate tensile stress-strain curves, the kinetic equation was transformed using the Taylor strain hardening law and an analytical solution was obtained for this equation. Using the example of plate specimens of two-dimensional polycrystals of high purity aluminium (99.999 at.%) it was shown that the calculation results are in good agreement with experimental data.

引用

页码：25 / 29

页数：5

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