Localization of plastic flow at dynamic channel angular pressing

被引：19

作者：

Borodin, E. N. ^{[1
]}

Mayer, A. E. ^{[1
]}

机构：

[1] Chelyabinsk State Univ, Chelyabinsk 454001, Russia

来源：

TECHNICAL PHYSICS | 2013年 / 58卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

Shock Wave; Dislocation Density; Plastic Flow; Equal Channel Angular Press; Copper Cylinder;

D O I：

10.1134/S1063784213080070

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of plastic flow localization, which is significant for obtaining ultra-fine-grain metals by intense high-rate plastic straining, is studied numerically. Large-scale localization of plastic flow, which is determined by the geometry of the problem, as well as microscopic localization appearing due to instability of plastic strain during the passage of a shock wave through the material, is detected. This effect is proposed for explaining the formation of nanocrystal-size grains obtained in experiments on dynamic channel-angular pressing.

引用

页码：1159 / 1163

页数：5