Microstructures in friction stir welded 304 austenitic stainless steel

H. Kokawa, S. H.C. Park, Y. S. Sato, K. Okamoto, S. Hirano, M. Inagaki

研究成果: Article査読

17 被引用数 (Scopus)

抄録

Friction stir welding was applied to 304 austenitic stainless steel. The microstructural evolution and hardness distribution in the weld were investigated. The stir zone (SZ) and thermomechanically affected zone (TMAZ) showed dynamically recrystallised and recovered microstructures, respectively. The hardness of the SZ was higher than that of the base material and the maximum hardness was located in the TMAZ. The higher hardness in TMAZ was attributed to high density of dislocations and sub-grains. Electron microscopic observations revealed that ferrite and sigma phase were formed in austenite matrix in the SZ depending on the cooling rate during FSW.

本文言語English
ページ(範囲)34-40
ページ数7
ジャーナルWelding in the World
49
3-4
DOI
出版ステータスPublished - 2005 1 1

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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