Electropulsing induced evolution of grain-boundary precipitates without loss of strength in the 7075 Al alloy

被引：44
作者：
Xu, Xiaofeng
Zhao, Yuguang [1 ]
Ma, Bingdong
Zhang, Ming
机构：
[1] Jilin Univ, Minist Educ, Key Lab Automobile Mat, Changchun 130025, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2015年 / 105卷
基金：
中国国家自然科学基金;
关键词：
7075 Al alloy; Grain boundaries; Precipitates; Microstructure; Electropulsing; MECHANICAL-PROPERTIES; MG ALLOY; MICROSTRUCTURE; BEHAVIOR;
D O I：
10.1016/j.matchar.2015.05.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of electropulsing on the peak-aged (T6) microstructures in the 7075 Al alloy was investigated in this study. The results show that parts of the intragranular precipitates dissolve in the matrix during electropulsing, and the electropulsing treated sample exhibits discontinuous dissolution of the grain-boundary precipitates (GBP). After re-aging, the mechanical properties of the re-aged (RA) sample are nearly the same as that of T6 temper, meanwhile, the grown discontinuous GBP were obtained. Hence it is a promising method to change the distribution of GBP without loss the strength in the 7075 Al alloy. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码：90 / 94
页数：5
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