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On the Critical Technological Issues of Friction Stir Welding T-Joints of Dissimilar Aluminum Alloys

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Abstract

In this article, friction stir welded T-joints of innovative dissimilar aluminum alloys have been produced and tested with the aim to investigate the feasibility of using this joining technique, in this configuration, in the aerospace field with the final aim to save weight. The introduction of both this new welding technique and innovative alloys, such as AA 2198 and AA 6056, could allow making lighter and stronger structures. Some experiments, carried out previously, have shown that the fixturing device, the tool geometry, and the tilt angle play a significant role in the joint soundness. A wide experimental characterization has been carried out on FSW T-joints of AA 6056 T4 extrudes to AA 2198 T3 rolled plates. The results attained allow to put in evidence some critical issues on the investigated configuration and can be considered as a further acquired knowledge in the understanding and the design of friction stir processes.

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Acknowledgment

Authors acknowledge Alenia Aeronautica S.p.A for providing materials to make joints and supporting research activity.

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Authors and Affiliations

  1. Department of Materials and Production Engineering, University of Naples Federico II, Naples, Italy

    A. Astarita, A. Squillace & A. Scala

  2. Operations—Manufacturing Research & Development, ALENIA Aeronautica S.p.A, Turin, Italy

    A. Prisco

Authors
  1. A. Astarita
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  2. A. Squillace
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  3. A. Scala
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  4. A. Prisco
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Correspondence to A. Astarita.

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Astarita, A., Squillace, A., Scala, A. et al. On the Critical Technological Issues of Friction Stir Welding T-Joints of Dissimilar Aluminum Alloys. J. of Materi Eng and Perform 21, 1763–1771 (2012). https://doi.org/10.1007/s11665-011-0073-3

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  • DOI: https://doi.org/10.1007/s11665-011-0073-3

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