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Characterization of Superplastically Formed Friction Stir Weld in Titanium 6AL-4V: Preliminary Results

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Abstract

A collaborative University and Industry research project was undertaken to evaluate the performance of as friction stir welded (FSW) and friction stir welded and superplastically formed (FSW-SPF) titanium 6Al-4V alloy sheets. The purpose of this initial phase of research is to test and evaluate the mechanical properties of FSW and post SPF-FSW 2-3 mm thick sheets of titanium. As-FSW and FSW with SPF Ti alloy (standard and fine grain size) butt joints were characterized in terms of microstructures, micro-hardness, metallurgy and tensile properties. The preliminary results of the FSW and post FSW-SPF joint were found to be close to that of as-received titanium with respect to strength, but elongations were decreased.

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Acknowledgment

The authors gratefully acknowledge the financial support of the Boeing Company for supporting this effort.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Washington, Seattle, WA, USA

    D.G. Sanders, M. Ramulu, E.J. Klock-McCook & P.D. Edwards

  2. The Boeing Company, Seattle, WA, USA

    D.G. Sanders & P.D. Edwards

  3. The University of South Carolina, Columbia, SC, USA

    A.P. Reynolds

  4. Edison Welding Institute, Columbus, OH, USA

    T. Trapp

Authors
  1. D.G. Sanders
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  2. M. Ramulu
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  3. E.J. Klock-McCook
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  4. P.D. Edwards
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  5. A.P. Reynolds
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  6. T. Trapp
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Corresponding author

Correspondence to D.G. Sanders.

Additional information

This article was presented at the AeroMat Conference, International Symposium on Superplasticity and Superplastic Forming (SPF) held in Baltimore, MD, June 25-28, 2007.

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Sanders, D., Ramulu, M., Klock-McCook, E. et al. Characterization of Superplastically Formed Friction Stir Weld in Titanium 6AL-4V: Preliminary Results. J. of Materi Eng and Perform 17, 187–192 (2008). https://doi.org/10.1007/s11665-007-9186-0

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  • DOI: https://doi.org/10.1007/s11665-007-9186-0

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