Microstructural studies of friction stir welded Zircaloy-4

Yutaka S. Sato, Yoshito Nagahama, Sergey Mironov, Hiroyuki Kokawa, Seung Hwan C. Park, Satoshi Hirano

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


Friction stir welding was applied to a zirconium alloy, Zircaloy-4, using a Co-based alloy tool. Zircaloy-4 was successfully welded, and a shiny, smooth surface was obtained. FSW produced a defect-free weld with a fine equiaxed grain structure in the stir zone, which caused an increase in hardness.

Original languageEnglish
Pages (from-to)241-244
Number of pages4
JournalScripta Materialia
Issue number3
Publication statusPublished - 2012 Aug


  • Electron backscattering diffraction
  • Friction stir welding
  • Hardness
  • Recrystallization
  • Zirconium alloy


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