Metallurgical and Mechanical Properties of Al–Cu Joint by Friction Stir Spot Welding and Modified Friction Stir Clinching
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2021-08
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en
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10
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Metals and Materials International, Volume 27, issue 8, pp. 3085-3094
Abstract
Abstract: Dissimilar joints of AA5083 and pure Cu joint are successfully produced and compared by friction stir spot welding and modified friction stir clinching with intermediate layer of Zn interlayer for the first time. Self-reacting behavior of Zn is observed to obtain sound welds resulted from intermixing in stir zone (in FSSW), refilled zone (in MFSC) and brazed zone (in both FSSW and MFSC). MFSC is used to fill the cavity of keyhole that in turn increased 40% strength of dissimilar Cu–Al joints. Presence of lamellar eutectics in brazed zone and intermetallic compounds such as Al2Cu, Al4Cu9, CuZn5 and Cu4Zn in weld zone are confirmed in Cu–Al MFSC joints. Graphic Abstract: [Figure not available: see fulltext.]Description
Keywords
Al–Cu, Dissimilar welding, Microstructural evolution, Modified friction stir clinching, Zn interlayer
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Citation
Gao, P, Zhang, Y & Mehta, K 2021, ' Metallurgical and Mechanical Properties of Al–Cu Joint by Friction Stir Spot Welding and Modified Friction Stir Clinching ', Metals and Materials International, vol. 27, no. 8, pp. 3085-3094 . https://doi.org/10.1007/s12540-020-00759-w