Effect of Laser Power on Microstructure and Micro-Galvanic Corrosion Behavior of a 6061-T6 Aluminum Alloy Welding Joints

doi:10.3390/met11010003

IMR OpenIR

	Effect of Laser Power on Microstructure and Micro-Galvanic Corrosion Behavior of a 6061-T6 Aluminum Alloy Welding Joints
	Zhou, Huiling 1; Fu, Fanglian 1; Dai, Zhixin 2; Qiao, Yanxin 1; Chen, Jian 1,3; Liu, Wen 1
通讯作者	Qiao, Yanxin(yxqiao@just.edu.cn) ; Chen, Jian(jchen496@uwo.ca)
	2021
发表期刊	METALS
卷号	11 期号:1 页码:8
摘要	The 6061-T6 aluminum alloy welding joints were fabricated using gas metal arc welding (GMAW) of various laser powers, and the effect of laser power on the microstructure evolution of the welding joints was investigated. The corrosion behaviors of 6061-T6 aluminum alloy welding joints were investigated in 3.5 wt% NaCl solution using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results showed that the micro-galvanic corrosion initiation from Mg2Si or around the intermetallic particles (Al-Fe-Si) is observed after the immersion test due to the inhomogeneous nature of the microstructure. The preferential dissolution of the Mg2Si and Al-Fe-Si is believed to be the possible cause of pitting corrosion. When the laser power reached 5 kW, the microstructure of the welded joint mainly consisted of Al-Fe-Si rather than the Mg2Si at 2 kW. The relatively higher content of Al-Fe-Si with increasing in laser power would increase the volume of corrosion pits.
关键词	6061 aluminum alloy welding micro-galvanic corrosion intermetallic particles
资助者	National Natural Science Foundation of China
DOI	10.3390/met11010003
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51975263] ; National Natural Science Foundation of China[51575252]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000610490500001
出版者	MDPI
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159018
专题	中国科学院金属研究所
通讯作者	Qiao, Yanxin; Chen, Jian
作者单位	1.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Western Ontario, Dept Chem & Surface Sci Western, London, ON N6A 5B7, Canada
推荐引用方式 GB/T 7714	Zhou, Huiling,Fu, Fanglian,Dai, Zhixin,et al. Effect of Laser Power on Microstructure and Micro-Galvanic Corrosion Behavior of a 6061-T6 Aluminum Alloy Welding Joints[J]. METALS,2021,11(1):8.
APA	Zhou, Huiling,Fu, Fanglian,Dai, Zhixin,Qiao, Yanxin,Chen, Jian,&Liu, Wen.(2021).Effect of Laser Power on Microstructure and Micro-Galvanic Corrosion Behavior of a 6061-T6 Aluminum Alloy Welding Joints.METALS,11(1),8.
MLA	Zhou, Huiling,et al."Effect of Laser Power on Microstructure and Micro-Galvanic Corrosion Behavior of a 6061-T6 Aluminum Alloy Welding Joints".METALS 11.1(2021):8.