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A novel method for resistance spot welding between steel and aluminum alloy

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A?new?jointing?method,?termed?resistance?spot?welding?with?embedded?composite?electrodes,?was?tried?to?weld?steel?to?aluminum?alloy.?A?reaction?layer?was?observed?at?the?welding?interface?and?its?thickness?at?the?interface?presented?a?bimodal?distribution

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?A novel method for resistance spot welding between steel and aluminum alloy

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Ranfeng Qiu1, 2, Jiuyong Li1, Lihu Cui1, Hongxin Shi1, 2, Yangyang Zhao1

1. School of Materials Science and Engineering, Henan University of Science
and Technology, Luoyang 471003,China; 2. Collaborative Innovation Center of
Nonferrous Metals, He'nan Province, Luoyang 471003, China

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?? Abstract / 摘 要 ? ?

A new jointing method, termed resistance spot welding with embedded composite electrodes, was tried to weld steel to aluminum alloy. A reaction layer was observed at the welding interface and its thickness at the interface presented a bimodal distribution. A tensile shear load of a maximum of 6.28 kN was obtained at a welding current of 28 kA. The results reveal that resistance spot welding with embedded composite electrodes is an effective method for restraining the interfacial reaction products growth in the welding central region.

?? Key words / 关键词 ? ?

resistance spot welding; aluminum alloy; steel; embedded composite electrodes

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? ?About the author / 作者简介 ? ?

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Ranfeng Qiu was born in 1974. He received his PhD in Mechanical Engineering from Kumamoto University in 2009. He is currently a Vice-Professor at the School of Materials Science and Engineering, He'nan University of Science and Technology. His research interests are resistance spot welding of dissimilar materials. He has published over 50 refereed papers in international journals and conferences.

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