Microstructure evolution during friction-stir welding of AZ31 magnesium alloy

S. Mironov, T. Onuma, Y. S. Sato, H. Kokawa

Research output: Contribution to journalArticlepeer-review

159 Citations (Scopus)


The microstructure evolution of a typical hexagonal close-packed (HCP) material (AZ31 magnesium alloy) during friction stir welding was studied in a wide range of welding temperatures. In all cases, the grain structure development was found to be significantly influenced by the formation of a very strong {0 0 0 1} 'u w t v' B-fiber texture. Due to limitations imposed by this texture as well as by symmetry of the HCP crystal structure, an extensive lowering of grain-boundary misorientation was found to occur during deformation.

Original languageEnglish
Article number12394
Pages (from-to)301-312
Number of pages12
JournalActa Materialia
Publication statusPublished - 2015 Nov 1


  • Electron-backscatter diffraction (EBSD)
  • Friction-stir welding
  • Magnesium
  • Microstructure
  • Texture


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