NUMERICAL SIMULATION FOR DEFORMATION OF NANO-GRAINED METALS

被引：0

作者：

杨卫 ^{[1
]}

洪伟 ^{[1
]}

机构：

[1] Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China

来源：

Acta Mechanica Sinica | 2002年 / 18卷 / 05期

基金：

中国国家自然科学基金;

关键词：

nano-grained metals; grain boundary sliding; grain rotation; stress strain relation;

D O I：

暂无

中图分类号：

TB383.1 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

Electro-deposition technique is capable of producing nano-grainedbulk copper specimens that exhibit superplastic extensibility at room temperature.Metals of such small grain sizes deform by grains sliding,with little distortion occur-ring in the grain cores.Accommodation mechanisms such as grain boundary diffusion,sliding and grain rotation control the kinetics of the process.Actual deformation min-imizes the plastic dissipation and stored strain energy for representative steps of grainneighbor switching.Numerical simulations based on these principles are discussed inthis paper.

引用

页码：506 / 515

页数：10

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