Universality and scaling of unstable plastic flow

被引：12

作者：

Lebyodkin, MA ^{[1
]}

Dunin-Barkovskii, LR ^{[1
]}

Lebedkina, TA ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Region, Russia

来源：

JETP LETTERS | 2002年 / 76卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1541046

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The statistics of the jumplike plastic deformation of a Cu-Be alloy under the conditions of a low-temperature unstable plastic flow is studied experimentally. At a high strain rate, the parameters of the load jumps are found to be related by power laws, which corresponds to a scale-invariant behavior. A comparison with the data obtained for another mechanism of plastic instability, namely, the Portevin-Le Chatelier effect, points to the existence of universal laws governing the dynamics of a dislocation ensemble in the conditions of plastic instability. (C) 2002 MAIK "Nauka/Interperiodica".

引用

页码：612 / 615

页数：4

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