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Observations of Tool-Workpiece Interactions during Friction Stir Processing of Ti-6Al-4V

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Abstract

Significant tool wear manifested as submicron tungsten-rich particles was observed in the workpiece after friction stir processing (FSP) of investment cast Ti-6Al-4V on both the surface and in the bulk of the stir zone. The tool was manufactured from a tungsten alloy, which stabilizes the β phase and can locally suppress the β transus. A postprocessing α/β heat treatment was performed to demonstrate the microstructure effects of tungsten dissolution.

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Acknowledgment

The authors acknowledge the support of the Office of Naval Research under Contract No. N00014-06-1-0089, with Dr. J. Christodoulou as the project monitor.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA

    A.L. Pilchak ( Graduate Research Associate) & J.C. Williams ( Professor, Honda Chair)

  2. Diversity and Outreach, College of Engineering, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USA

    M.C. Juhas ( Senior Assistant Dean, Research Scientist)

Authors
  1. A.L. Pilchak
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  2. M.C. Juhas
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  3. J.C. Williams
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Corresponding author

Correspondence to A.L. Pilchak.

Additional information

[rl]Manuscript submitted August 10, 2006.

M.C. Juhas is currently on leave at the National Science Foundation.

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Pilchak, A., Juhas, M. & Williams, J. Observations of Tool-Workpiece Interactions during Friction Stir Processing of Ti-6Al-4V. Metall Mater Trans A 38, 435–437 (2007). https://doi.org/10.1007/s11661-006-9059-4

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