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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
Corresponding AuthorMa, Z. Y.(zyma@imr.ac.cn)
2018-06-01
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume140Pages:197-206
Abstract2.4 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.
KeywordFriction stir spot welding Dissimilar metals Zn-Al coating Intermetallic compound Metallurgical bonding
Funding OrganizationNational Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province Program
DOI10.1016/j.matchar.2018.04.011
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000433272800022
PublisherELSEVIER SCIENCE INC
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128268
Collection中国科学院金属研究所
Corresponding AuthorMa, Z. Y.
Affiliation1.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
Recommended Citation
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.
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