Corrosion Behavior of Keyhole-Free Friction Stir Spot Welded Joints of Dissimilar 6082 Aluminum Alloy and DP600 Galvanized Steel in 3.5% NaCl Solution

doi:10.3390/met7090338

	Corrosion Behavior of Keyhole-Free Friction Stir Spot Welded Joints of Dissimilar 6082 Aluminum Alloy and DP600 Galvanized Steel in 3.5% NaCl Solution
	Zhang, Zhong-Ke1 ; Yu, Yang1 ; Zhang, Jian-Fei 1; Wang, Xi-Jing1,2
	2017-09
发表期刊	METALS
ISSN	2075-4701
卷号	7 期号:9
摘要	The corrosion behavior of keyhole-free friction stir spot welded joints of dissimilar 6082 aluminum alloy and DP600 galvanized steel in 3.5% NaCl solution has been investigated by the immersion test and electrochemical analysis. The surface of the aluminum alloy produced exfoliation and pitting corrosion. The pitting occurred seriously on the interface of the 6082 aluminum alloy, but the steel had no corrosion. The corrosion galvanic couples were formed between elements of Si and Fe with a high electrode potential, and Mg and Al with a low electrode potential, around them. Mg and Al elements of Mg2Si and Si-containing solid-solution phase (Al) preferentially became an anodic dissolution and formed exfoliation corrosion around the Si elements. Fe-rich phase (Al3Fe) as the cathode caused corrosion of Mg and formed pitting around Mg-rich phase (Al3Mg2) as the anode. The sequence of the corrosion resistance of different areas of the joints (with decreasing corrosion resistance) was WNZ (Weld Nugget Zone) > TMAZ (Thermo-mechanically Affected Zone) > BM (Base Metal) > HAZ (Heat-affected Zone). The joints of keyhole-free FSSW (Fiction Stir Spot Welding) of dissimilar 6082 aluminum alloy and DP600 galvanized steel have better corrosion resistance than base metal in 3.5% NaCl solution.
关键词	dissimilar aluminum /steel keyhole-free FSSW pitting exfoliation corrosion intermetallic compounds
DOI	10.3390/met7090338
收录类别	SCI ; SCIE
语种	英语
资助项目	national natural science foundation project of China[10902047] ; natural science foundation project of Gansu province[2014GS03264]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000412063900017
出版者	MDPI
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/33117
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院土木工程学院
通讯作者	Zhang, Zhong-Ke
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	材料科学与工程学院
通讯作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Zhang, Zhong-Ke,Yu, Yang,Zhang, Jian-Fei,et al. Corrosion Behavior of Keyhole-Free Friction Stir Spot Welded Joints of Dissimilar 6082 Aluminum Alloy and DP600 Galvanized Steel in 3.5% NaCl Solution[J]. METALS,2017,7(9).
APA	Zhang, Zhong-Ke,Yu, Yang,Zhang, Jian-Fei,&Wang, Xi-Jing.(2017).Corrosion Behavior of Keyhole-Free Friction Stir Spot Welded Joints of Dissimilar 6082 Aluminum Alloy and DP600 Galvanized Steel in 3.5% NaCl Solution.METALS,7(9).
MLA	Zhang, Zhong-Ke,et al."Corrosion Behavior of Keyhole-Free Friction Stir Spot Welded Joints of Dissimilar 6082 Aluminum Alloy and DP600 Galvanized Steel in 3.5% NaCl Solution".METALS 7.9(2017).

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