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Formability of friction-stir-welded dissimilar-aluminum-alloy sheets

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Abstract

Friction stir welding (FSW) was investigated as a method for joining dissimilar-aluminum alloys 5182-O, 5754-O, and 6022-T4. These alloys are used in automotive applications in which parts consisting of dissimilar welded combinations of these alloys may be of interest. This study focuses on the formability of friction-stir-welded, dissimilar-alloy pairs of essentially the same gage, in order to investigate the mechanical properties that can be obtained using this approach. Testing showed that the properties of welded 5182/5754 alloy pairs retained reasonably good formability compared to base material performance. However, the 5182/6022 and 5754/6022 alloy pairs had significantly reduced formability compared to the base material properties, with failures occurring in the heat-affected zone (HAZ) of the 6022 or in the weld nugget itself. However, this level of formability was not much worse than that of monolithic, friction-stir-welded 6022.

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Author notes

  1. D. W. Melton (Graduate Student, Doctoral Candidate)

    Present address: Manufacturing Engineering Technology, the College of Engineering and Technology, Brigham Young University, 84602, Provo, UT

Authors and Affiliations

  1. Manufacturing Engineering Technology, the College of Engineering and Technology, Brigham Young University, 84602, Provo, UT

    M. P. Miles (Assistant Professor)

  2. Mechanical Engineering, the College of Engineering and Technology, Brigham Young University, 84602, Provo, UT

    T. W. Nelson (Associate Professor)

  3. Utah State University, 84322, Logan, UT

    D. W. Melton (Graduate Student, Doctoral Candidate)

Authors
  1. M. P. Miles
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  2. T. W. Nelson
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  3. D. W. Melton
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Miles, M.P., Nelson, T.W. & Melton, D.W. Formability of friction-stir-welded dissimilar-aluminum-alloy sheets. Metall Mater Trans A 36, 3335–3342 (2005). https://doi.org/10.1007/s11661-005-0008-4

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  • DOI: https://doi.org/10.1007/s11661-005-0008-4

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