Metallurgical and Materials Transactions A

, Volume 41, Issue 4, pp 1016–1024 | Cite as

Specific Character of Material Flow in Near-Surface Layer during Friction Stir Processing of AZ31 Magnesium Alloy

  • S. Mironov
  • Q. Yang
  • H. Takahashi
  • I. Takahashi
  • K. Okamoto
  • Y.S. Sato
  • H. Kokawa
Article

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.

Notes

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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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2010

Authors and Affiliations

  • S. Mironov
    • 1
  • Q. Yang
    • 2
  • H. Takahashi
    • 1
  • I. Takahashi
    • 2
    • 3
  • K. Okamoto
    • 3
  • Y.S. Sato
    • 1
  • H. Kokawa
    • 1
  1. 1.Department of Materials Processing, Graduate School of EngineeringTohoku UniversitySendaiJapan
  2. 2.Research and Development DivisionHitachi America Ltd.Farmington HillsUSA
  3. 3.Hitachi Research LaboratoryHitachi Ltd.HitachiJapan

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