Effect of Repair Welding on Corrosion Behavior of 7N01 Aluminum Alloy Welded Joint

被引：0
|
作者：
Li Shuai [1 ,2 ]
Liu Zhongying [1 ]
Wang Xingxing [1 ]
Mao Feng [2 ]
Xia Yueqing [1 ]
Jiu Yongtao [3 ]
Shangguan Linjian [1 ]
Long Weimin [3 ]
机构：
[1] North China Univ Water Resources & Elect Power, Sch Mech Engn, Zhengzhou 450045, Peoples R China
[2] Henan Univ Sci & Technol, Natl Joint Engn Res Ctr Abras Control & Molding M, Luoyang 471003, Peoples R China
[3] Zhengzhou Res Inst Mech Engn, State Key Lab Adv Brazing Filler Met & Technol, Zhengzhou 450001, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2021年 / 50卷 / 03期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
MIG welding; repair welding; 7N01 aluminum alloy; corrosion behavior; heat-affected zone; thermal cycles; ZN-MG ALLOY; MECHANICAL-PROPERTIES; EXFOLIATION CORROSION; MICROSTRUCTURE; STRENGTH; EVOLUTION; TEMPER;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mandatory repair welding for production of structural parts easily causes problems to the reliability of welded joints due to the resultant extra thermal cycle. The evolution of corrosion resistance of repair welded joint of 7N01 aluminum alloy in T5 and T4 state through metal inert gas (MIG) welding process was investigated. The results reveal that repair welding deteriorates the corrosion resistance of weldment, especially of the heat-affected zone. The main reason for the change in corrosion resistance of repair weldment is related to the transformation of precipitates and the diffusion of Zn from the matrix to grain boundaries caused by the extra thermal cycles.
引用
收藏
页码：762 / 768
页数：7
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