Effect of cooling rate on microstructure of friction-stir welded AA1100 aluminum alloy

D. Yi, S. Mironov, Y. S. Sato, H. Kokawa

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

In this work, the microstructural changes occurring during cooling of friction-stir welded aluminum alloy AA1100 were evaluated. To this end, friction-stir welding (FSW) was performed in a wide range of cooling rates of 20–62 K/s and the evolved microstructures were studied by using electron backscatter diffraction. Below 0.6 Tm (Tm being the melting point), the stir zone material was found to experience no significant changes during cooling. At higher FSW temperatures, however, notable changes occurred in the welded material, including grain growth, sharpening of texture, reduction of the fraction of high-angle boundaries and material softening.

Original languageEnglish
Pages (from-to)1965-1977
Number of pages13
JournalPhilosophical Magazine
Volume96
Issue number18
DOIs
Publication statusPublished - 2016 Jun 22

Keywords

  • Aluminum
  • electron backscatter diffraction (EBSD)
  • friction-stir welding
  • microstructure
  • texture

ASJC Scopus subject areas

  • Condensed Matter Physics

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