Effect of heat treatment on microstructures and mechanical properties of Al-6Zn-2Mg-1.5Cu-0.4Er alloy

被引：4
|
作者：
刘莹颖 [1 ]
夏长清 [1 ]
彭小敏 [1 ]
机构：
[1] School of Materials Science and Engineering,Central South University
来源：
Journal of Central South University of Technology | 2010年 / 17卷 / 01期
关键词：
Al-Zn-Mg-Cu alloy; Er; heat treatment; microstructures; mechanical properties; conductivity;
D O I：
暂无
中图分类号：
TG166.3 [铝及其合金的热处理];
学科分类号：
080201 ; 080503 ;
摘要：
The microstructures and mechanical properties of A1-6Zn-2Mg-1.5Cu-0.4Er alloy under different treatment conditions were investigated by transmission electron microscopy (TEM) observation, and tensile properties and hardness test, respectively. The relationship between mechanical properties and microstructures of the alloys was discussed. With trace Er addition to A1-Zn-Mg-Cu alloy, Er and Al interact to form Al3Er phase, which is coherent with α(Al) matrix. The results show that A1-Zn-Mg-Cu alloy after retrogression and re-ageing (RRA) heat treatment exhibits higher tensile strength, ductility and conductivity.
引用
收藏
页码：24 / 27
页数：4
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