Influencing mechanism of Al-containing Zn coating on interfacial microstructure and mechanical properties of friction stir spot welded Mg-steel joint

doi:10.1016/j.matchar.2018.04.011

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	Influencing mechanism of Al-containing Zn coating on interfacial microstructure and mechanical properties of friction stir spot welded Mg-steel joint
	Xu, R. Z.1,2; Ni, D. R.1; Yang, Q.1; Xiao, B. L.1; Liu, C. Z.2; Ma, Z. Y.1
刊名	MATERIALS CHARACTERIZATION
	2018-06-01
卷号	140 页码:197-206
关键词	Friction stir spot welding Dissimilar metals Zn-Al coating Intermetallic compound Metallurgical bonding
ISSN号	1044-5803
DOI	10.1016/j.matchar.2018.04.011
通讯作者	Ma, Z. Y.(zyma@imr.ac.cn)
英文摘要	2.4 mm thick AZ31 Mg alloy sheet and 1.5 mm Q234 steel sheet with a hot-dipped Al-containing Zn coating were friction stir spot welded (FSSW) using a pinless tool. It was shown that the Al-containing Zn coating played a crucial role in joining the Mg alloy and steel during FSSW. The Zn coating observably improved the Mg steel interfacial wettability during FSSW, and the Al5Fe2 phase in the Zn coating on the steel substrate surface promoted the metallurgical bonding of Mg alloy and steel. It was confirmed that the Al5Fe2 phase on the steel surface resulted from the reaction between the steel substrate and the Al in the Zn coating during hot-dipping, and was not related to the Al-containing Mg alloy substrate. The tensile-shear load of the FSSW Mg steel joint reached 4.3 kN. The fracture of the joint occurred along the interface on the steel substrate side. The interface between the Al5Fe2 layer and Mg alloy substrate was the weakest region of the Mg steel joint.
资助项目	National Natural Science Foundation of China[51601121] ; National Natural Science Foundation of China[51331008] ; Natural Science Foundation of Liaoning Province Program[L201624] ; Natural Science Foundation of Liaoning Province Program[201602570]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000433272800022
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/128267]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ma, Z. Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Shenyang Aerosp Univ, Coll Mat Sci & Engn, 37 Daoyi South St, Shenyang 110136, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Xu, R. Z.,Ni, D. R.,Yang, Q.,et al. Influencing mechanism of Al-containing Zn coating on interfacial microstructure and mechanical properties of friction stir spot welded Mg-steel joint[J]. MATERIALS CHARACTERIZATION,2018,140:197-206.
APA	Xu, R. Z.,Ni, D. R.,Yang, Q.,Xiao, B. L.,Liu, C. Z.,&Ma, Z. Y..(2018).Influencing mechanism of Al-containing Zn coating on interfacial microstructure and mechanical properties of friction stir spot welded Mg-steel joint.MATERIALS CHARACTERIZATION,140,197-206.
MLA	Xu, R. Z.,et al."Influencing mechanism of Al-containing Zn coating on interfacial microstructure and mechanical properties of friction stir spot welded Mg-steel joint".MATERIALS CHARACTERIZATION 140(2018):197-206.