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

doi:10.3390/met11010003

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	METALS
	2021
卷号	11 期号:1 页码:8
关键词	6061 aluminum alloy welding micro-galvanic corrosion intermetallic particles
DOI	10.3390/met11010003
通讯作者	Qiao, Yanxin(yxqiao@just.edu.cn) ; Chen, Jian(jchen496@uwo.ca)
英文摘要	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.
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
语种	英语
出版者	MDPI
WOS记录号	WOS:000610490500001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/159017]
专题	金属研究所_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.