Tensile strength of friction stir spot welded dissimilar AA5754-to-AZ31B alloys

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Proceedings titleASM Proceedings of the International Conference: Trends in Welding Research
Conference9th International Conference on Trends in Welding Research, 4 June 2012 through 8 June 2012, Chicago, IL
Pages572579; # of pages: 8
SubjectAutomotive applications; Dissimilar joining; Friction stir spot welding; Friction stir welding(FSW); Geometrical dimensions; Material combination; Resistant spot welding; Tensile shear strength; Aluminum alloys; Cerium alloys; Dissimilar materials; Friction stir welding; Joining; Magnesium alloys; Spot welding; Tools; Welding; Tensile strength
AbstractFriction stir welding (FSW) is a relatively new joining process. As a solid-state joining technique, FSW provides good potential for dissimilar materials, even for those considered to be "difficult" and "unweldable". As a variant, friction stir spot welding (FSSW) can have significant potential to replace riveting or resistant spot welding for aerospace and automotive applications. To date, limited work has been carried out on the FSSW of dissimilar material combinations. In this work, the tensile shear strength obtained is reported for a dissimilar 2-mm thick AA5754-to-AZ31 alloy system. The main process parameters investigated include tool rotation speed, tool plunge rate, dwell time and work-piece placement (i.e. either Al or Mg alloy on the top of the lap spot welds). The tensile shear strength is also compared with that obtained for similar AA5754-to-AA5754 and AZ31-to-AZ31 welds. Furthermore, the tensile shear strength is correlated with the joint geometrical dimensions and welding defects. Copyright © 2013 ASM International® All rights reserved.
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AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Aerospace Research
Peer reviewedYes
NPARC number21269623
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Record identifier7e2d3567-482e-49b7-8298-2419de9ae46d
Record created2013-12-13
Record modified2016-05-09
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