Study on corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint

被引：8
|
作者：
Sun, Xiaoguang [1 ,2 ]
Xu, Xuexu [1 ]
Wang, Zihan [1 ]
Liu, Zhiyong [1 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing, Peoples R China
[2] CRRC Qingdao Sifang Rolling Stock Res Inst Co Ltd, Qingdao, Peoples R China
来源：
ANTI-CORROSION METHODS AND MATERIALS | 2021年 / 68卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Welded joint; Aluminum alloy; Corrosion fatigue; 6005A; WEATHERING STEEL; INCLUSIONS;
D O I：
10.1108/ACMM-04-2021-2471
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Purpose The purpose of this paper is to determine the corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint. Design/methodology/approach Electron back-scattered diffraction (EBSD) were adopted to characterize the microstructure of 6005A aluminum alloy and welded joint. Through potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and corrosion fatigue experiments, the corrosion fatigue behavior and mechanism of 6005A aluminum alloy base metal and welded joint were studied. Findings The results show that the corrosion fatigue crack initiation of 6005A aluminum alloy base metal and welded joint is mainly caused by the preferential anodic dissolution and hydrogen concentration in the areas with inclusions and welding defects. Originality/value The research is an originality study on the corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint.
引用
收藏
页码：302 / 309
页数：8
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