Grain structure development during friction stir welding of single-crystal austenitic stainless steel

Jong Jin Jeon, Sergey Mironov, Yutaka S. Sato, Hiroyuki Kokawa, Seung Hwan C. Park, Satoshi Hirano

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The high-resolution electron backscatter diffraction (EBSD) technique was used to study the grain boundary development and texture evolution during friction stir welding (FSW) in a single-crystal austenitic stainless steel. Strain-induced crystal rotations were found to be induced by simple shear deformation. With the crystal rotations, the single-crystal structure was broken up into a fine-grained polycrystalline aggregate in the stir zone. This process was deduced to be governed by continuous and discontinuous recrystallizations operating during the FSW process. The final texture which evolved in the stir zone was dominated by A/Ā{111} 〈110〉 ideal simple shear orientations.

Original languageEnglish
Pages (from-to)3157-3166
Number of pages10
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume44
Issue number7
DOIs
Publication statusPublished - 2013 Mar 15

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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