Precipitation Effect On Work Hardening Behavior Of ECAP-Deformed AI-4%Cu Alloy
It is well known that severe plastic deformation techniques, while giving substantial strength benefits, produce low ductility material. The aim of the present work is to analyze whether second phase precipitates obtained by postdeformation heat treatment, have a positive effect on the W-H behavior. On this sense, the typical precipitation hardening Al-4%Cu alloy is subjected to one and four ECAP passes, followed by low temperature precipitation heat treatment. The W-H behavior and the mechanical stability were determined for two levels of ECAP -deformation, different precipitates average size and distribution, and presence/absence of solute in solid solution. It was concluded that AbCu precipitates increased both W-H rate and uniform elongation of the alloy and the best strength -ductility combination was obtained by a postdeformation, 100℃ precipitation heat treatment of a sample which was ECAP-deformed in the solid solution condition.
Erika Fernanda Prados Vitor Luiz Sordi Maurizio Ferrante
Federal University of Sao Carlos,Department of Materials Engineering,13565-905,Sao Carlos (SP) BRASIL
国际会议
5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)
南京
英文
885-890
2011-03-01（万方平台首次上网日期，不代表论文的发表时间）