Abstract
Microstructure and texture evolution in the near-surface layer during friction stir processing (FSP) of AZ31 magnesium alloy was studied. Material flow was found to be a very complex process consisting of several stages. The material in front of the friction stir tool was first deformed by the rotating shoulder. Then, approaching the tool, it experienced a secondary deformation caused by the rotating pin, and finally, behind the tool, it again underwent a tertiary deformation induced by the shoulder. The texture evolution was shown to dictate the grain structure development.
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Acknowledgments
One of the authors (SM) expresses his hearty thanks to the Japan Society for the Promotion of Science and to Tohoku University for providing a scientific fellowship. Financial support from the Japanese Ministry of Education, Science, Sports and Culture with a Grant-in-Aid from the Global COE Program in Materials Integration International Center of Education and Research at Tohoku University is also gratefully acknowledged.
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Manuscript submitted May 8, 2009.
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Mironov, S., Yang, Q., Takahashi, H. et al. Specific Character of Material Flow in Near-Surface Layer during Friction Stir Processing of AZ31 Magnesium Alloy. Metall Mater Trans A 41, 1016–1024 (2010). https://doi.org/10.1007/s11661-009-0158-x
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DOI: https://doi.org/10.1007/s11661-009-0158-x