Homogeneous nucleation of dislocations

被引：28

作者：

Norman, G. E. ^{[1
]}

Yanilkin, A. V.

机构：

[1] Russian Acad Sci, Sci Assoc High Temp, Moscow 125412, Russia

来源：

PHYSICS OF THE SOLID STATE | 2011年 / 53卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

MOLECULAR-DYNAMICS; ATOMISTIC SIMULATIONS; NANOINDENTATION; CRYSTAL; COPPER; NANOCERAMICS; PLASTICITY; BOUNDARIES; METALS; LOOPS;

D O I：

10.1134/S1063783411080221

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The mechanism and stochastic properties of the homogeneous nucleation of dislocations have been studied. An approach has been proposed for determining the nucleation rate based on consideration of the lifetimes of a metastable state. Primary data have been obtained using the molecular dynamics method. The dependences of the nucleation rate on the shear stresses have been determined for several temperatures. An approximation of the obtained results in terms of the Arrhenius equation has been proposed. The regions of shear stresses and temperatures in which the mechanism of homogeneous dislocation nucleation can be realized have been estimated.

引用

页码：1614 / 1619

页数：6

共 33 条

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