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Effect of Circumferential Tool Path Control on Friction Stir Spot Welding of Al/Fe Dissimilar Metal Joint
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  • Journal title : Journal of Welding and Joining
  • Volume 34, Issue 3,  2016, pp.6-11
  • Publisher : The Korean Welding and Joining Society
  • DOI : 10.5781/JWJ.2016.34.3.6
 Title & Authors
Effect of Circumferential Tool Path Control on Friction Stir Spot Welding of Al/Fe Dissimilar Metal Joint
Yoon, Jin Young; Kim, Cheolhee; Rhee, Sehun;
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 Abstract
Joining Al/Fe dissimilar metals is becoming a subject of special interest in the assembly of automotive parts as a trade-off between the weight lightening and the cost reduction. Although various studies have been introduced to join Al alloy with the steel sheet by fusion welding, weak joint strength and galvanic corrosion still remained as problems to be solved. As a solid state welding, friction stir welding has been preferred to fusion welding processes in the dissimilar metal joints. This study investigated friction stir spot welding (FSSW) of Al alloy to the thin steel sheet with a thickness of 0.65 mm. The conventional FSSW is a stationary spot welding process but new approach adopted an additional circumferential movement in company with high speed tool rotation. A full factorial experimental design was implemented, and the main and interaction effects of parameters were analysed on the failure load in the tensile shear test. The direction and radius of rotation were statistically significant parameters and these two parameters affected the joint width and the shape of the hook.
 Keywords
Dissimilar metal;Al/Fe;Friction stir spot welding;Tool path;Experimental design;
 Language
Korean
 Cited by
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