Transactions of Materials and Heat Treatment

Title：Effect of hydrostatic stress on porous metal during equal channel angular pressing

Authors： ZHOU Ming-zhi XUE Ke-min LI Ping(School of Material Science and Engineer Hefei University of Technology Hefei 230009 China)

Unit：

KeyWords： porous materials equal channel angular pressing finite element analysis hydrostatic stress

ClassificationCode：TG376

year,vol(issue):pagenumber：2007,32(2):53-56

Abstract：

The purpose of equal channel angular pressing(ECAP) is to obtain the ultra-fine grained(UFG) materials.The densification and deformation behavior of pure aluminum by powder metallurgy during the ECAP process was studied by compressible rigid plastic FEM.Results show that ECAP process is a useful tool for eliminating the porosities in specimen.Analysis shows that hydrostatic stress state has an important effect on the results of product.High hydrostatic stress state is beneficial to improve the ductility and density of porous metal during the ECAP process.

Funds：

教育部博士学科点专项基金资助项目(040310B2);; 安徽省高校青年教师科研资助项目(2006jq1016)

Reference：

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