Effect of friction stirring on microstructure in equal channel angular pressed aluminum alloys

Y. S. Sato, M. Urata, H. Kokawa, K. Ikeda

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

Friction stir welding (FSW) was applied to equal channel angular (ECA) pressed aluminum (Al) alloys with high strength and toughness, and the effect of FSW on microstructure and the hardness profile in ECA-pressed alloys was examined. In the weld of ECA-pressed Al alloy 1050 and 5083, the stir zone had roughly the same hardness as the ECA-pressed material, while the hardness was slightly reduced in the thermo-mechanically affected zone (TMAZ). The reduction of hardness in the TMAZ was due to dynamic recovery of dislocation cells of the ECA-pressed material. The addition of Zr to Al suppressed the reduction of hardness in the TMAZ. Consequently, friction stir (FS) weld of Al-Zr alloy retained the hardness of the ECA-pressed material throughout the weld.

Original languageEnglish
Pages (from-to)2947-2952
Number of pages6
JournalMaterials Science Forum
Volume426-432
Issue number4
DOIs
Publication statusPublished - 2003
EventThermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, Spain
Duration: 2003 Jul 72003 Jul 11

Keywords

  • Aluminum alloys
  • Equal channel angular pressing
  • Friction Stir welding
  • Hardness
  • Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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