Connection mechanism research on friction stir spot welding without keyhole between magnesium and steel dissimilar alloys

doi:10.1179/1432891714Z.000000000471

CORC > 兰州理工大学 > 兰州理工大学

	Connection mechanism research on friction stir spot welding without keyhole between magnesium and steel dissimilar alloys
	Wang, X.J.; Li, W.H.; Zhao, G.
	2014-05-01
关键词	Alloy steel Friction Friction stir welding Galvanizing Magnesium alloys Magnesium printing plates Microstructure Scanning electron microscopy Spot welding Stadiums Steel sheet Completely-mixed Dissimilar alloys Friction stir spot welding Galvanised steel Magnesium sheets Mechanical connections Mechanism research Optimal welding
卷号	18
DOI	10.1179/1432891714Z.000000000471
页码	S21063-S21066
英文摘要	A 3 mm thick AZ31B magnesium sheet is lapped by friction stir spot welding (FSSW) to a 1 mm thick DP600 galvanised steel sheet. This is carried out without any keyhole under an optimal welding condition. A good joint of 8?7 kN strength is measured. The microstructure of welding joint is analysed by optical microscope and scanning electron microscopy, showing that steel is stirred into magnesium. The phenomenon is similar to a 'nail' embedded in the magnesium, with steel and magnesium completely mixed. Beside the metal compound formed between Fe and Al element, X-ray diffraction identifies intermetallic compounds formed between Mg and Al, Mg and Zn elements. Therefore, it is concluded that magnesium steel by FSSW without keyhole is governed by a mechanical connection, followed by metallurgical combine. © 2014 W. S. Maney & Son Ltd.
会议录	Materials Research Innovations
会议录出版者	Maney Publishing
语种	英语
ISSN号	14328917
WOS研究方向	Materials Science
WOS记录号	WOS:000337146600202
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117336]
专题	兰州理工大学
作者单位	State Key Laboratory of Advanced Non-ferrous Materials, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, X.J.,Li, W.H.,Zhao, G.. Connection mechanism research on friction stir spot welding without keyhole between magnesium and steel dissimilar alloys[C]. 见:.