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Microstructural studies of friction stir welded Zircaloy-4

Authors
Journal
Scripta Materialia
1359-6462
Publisher
Elsevier
Volume
67
Issue
3
Identifiers
DOI: 10.1016/j.scriptamat.2012.04.029
Keywords
  • Friction Stir Welding
  • Electron Backscattering Diffraction
  • Zirconium Alloy
  • Recrystallization
  • Hardness

Abstract

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.

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