One-dimensional model of formation of dislocation matrix structure and temperature dependence of size of vein pattern

被引:2
|
作者
Kratochvíl, J [1 ]
机构
[1] Czech Tech Univ, Fac Civil Engn, Prague 16629, Czech Republic
关键词
dislocation microstructure; dislocation patterning; dynamic phenomena; cyclic deformation;
D O I
10.1016/S1359-6462(00)00366-3
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A simplified model is developed for the mechanism governing the early stage of matrix structure formation, and to predict the dependence of the characteristic length scale of the vein pattern on the mean size of the loops. The matrix structure pattering is interpreted as a result of a redistribution of loops by a self-organization process. It is assumed that the loops and their size distribution are determined by the mechanism of their generation and the sweeping and drift of loops are dominant in the early pattering. All four types of loops, vacancy and interstitial types of two possible polarizations, are treated the same way as in the first approximation, the sweeping and drift of a loop is independent of the loop type.
引用
收藏
页码:95 / 101
页数:7
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