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Optimised design of electrode morphology for novel dissimilar resistance spot welding of aluminium alloy and galvanised high strength steel
Zhang, Weihua; Sun, Daqian; Han, Lijun; Li, Yongqiang; psdq@sina.com
2015
发表期刊MATERIALS & DESIGN
ISSN0261-3069
卷号85页码:461-470
摘要A novel resistance spot welding method of dissimilar materials of 6008-T66 aluminium alloy and H220YD galvanised high strength steel was presented, and the morphology of welding electrodes was designed optimally. Macrostructure, microstructure and mechanical property of the welded joints obtained with optimised electrodes were studied. Numerical simulation of current density distribution and temperature field during welding was also performed The optimised electrodes were a planar circular tip electrode with tip diameter of 10 mm on the steel side and a spherical tip electrode with spherical diameter of 70 mm on the aluminium alloy side. The welded joint obtained with optimised electrodes could be regarded as a special welded-brazed joint, and an intermetall ic compound layer composed of Fe2Al5 and Fe4Al13 with maximum thickness of about 4.0 mu m was formed at the aluminium steel interface in the welded joint. Tensile shear load up to 5.4 kN was achieved for the welded joint obtained with optimised electrodes. Current density distribution during welding with optimised electrodes was more homogeneous than that with F type electrodes. Furthermore, interfacial temperature in the welded joint during welding with optimised electrodes (about 915 degrees C) was lower than that with F type electrodes (about 985 degrees C). (C) 2015 Elsevier Ltd. All rights reserved.
部门归属[zhang, weihua] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [sun, daqian] jilin univ, sch mat sci & engn, minist educ, key lab automobile mat, changchun 130022, peoples r china ; [han, lijun] faw volkswagen automobile co ltd, dept prod management, changchun 130011, peoples r china ; [li, yongqiang] faw car co ltd, dept technol, changchun 130012, peoples r china
关键词Dissimilar Material Welding Microstructure Mechanical Property Optimised Design Electrode Morphology
资助者National Natural Science Foundation of China [51275204]; Shenyang National Laboratory for Materials Science [Y40663]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75036
专题中国科学院金属研究所
通讯作者psdq@sina.com
推荐引用方式
GB/T 7714
Zhang, Weihua,Sun, Daqian,Han, Lijun,et al. Optimised design of electrode morphology for novel dissimilar resistance spot welding of aluminium alloy and galvanised high strength steel[J]. MATERIALS & DESIGN,2015,85:461-470.
APA Zhang, Weihua,Sun, Daqian,Han, Lijun,Li, Yongqiang,&psdq@sina.com.(2015).Optimised design of electrode morphology for novel dissimilar resistance spot welding of aluminium alloy and galvanised high strength steel.MATERIALS & DESIGN,85,461-470.
MLA Zhang, Weihua,et al."Optimised design of electrode morphology for novel dissimilar resistance spot welding of aluminium alloy and galvanised high strength steel".MATERIALS & DESIGN 85(2015):461-470.
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