Development of Fine-Grained Structure Caused by Friction Stir Welding Process of a ZK60A Magnesium Alloy

Sergey Mironov; Yoshinobu Motohashi; Rustam Kaibyshev; Hidetoshi Somekawa; Toshiji Mukai; Kaneaki Tsuzaki

doi:10.2320/matertrans.MRA2008192

This article has now been updated. Please use the final version.

Development of Fine-Grained Structure Caused by Friction Stir Welding Process of a ZK60A Magnesium Alloy

Sergey Mironov, Yoshinobu Motohashi, Rustam Kaibyshev, Hidetoshi Somekawa, Toshiji Mukai, Kaneaki Tsuzaki

Author information

Keywords: friction stir welding, magnesium alloy, electron back-scatter diffraction, microstructural evolution

JOURNAL RESTRICTED ACCESS Advance online publication

Article ID: MRA2008192

DOI https://doi.org/10.2320/matertrans.MRA2008192

The final version of this article is now available: Vol. 50 (2009) , No. 3 p.610

Details

Abstract

A fine-grained microstructure average grain size of which is around 2 μm was developed in ZK60A magnesium alloy subjected to a FSW process. Material flow arose mainly from basal slips and was governed by simple shear deformations caused by the tool rotation.
The development of the fine-grained structure was a complex process driven by severe plastic deformations, formation of deformation bands, grain splitting, twinning and dynamic and/or static recrystallizations. It appears also that the microstructural evolution depended on morphology of fine dispersoids.

Corresponding author

Register with J-STAGE for free!