Microstructural evolution in 304 austenitic stainless steel during friction stir welding

Hiroyuki Kokawa, Seung Hwan C. Park, Yutaka S. Sato, Kazutaka Okamoto, Satoshi Hirano, Masahisa Inagaki

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The characteristics of microstructures in friction stir (FS) weld of 304 austenitic stainless steel were examined. The stir zone (SZ) and thermomechanically affected zone (TMAZ) showed dynamically recrystallized 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-boundaries. Electron microscopic observations revealed that ferrite and sigma phases were formed in austenite matrix in the SZ during friction stir welding (FSW).

本文言語English
ホスト出版物のタイトルMaterials Science Forum - Advanced Welding and Micro Joining/Packaging for the 21st Century - Selected peer reviewed papers from the International Welding/Joining Conference-Korea 2007, IWJC 2007
編集者Chang Hee Lee, Jong-Bong Lee, Jong-Bong Lee, Dong-Hwan Park, Suck-Joo Na
出版社Trans Tech Publications Ltd
ページ9-12
ページ数4
ISBN(電子版)978-0-87849-360-9
DOI
出版ステータスPublished - 2008 1 1
イベントInternational Welding/Joining Conference-Korea 2007, IWJC 2007 - Seoul, Korea, Republic of
継続期間: 2007 5 102007 5 12

出版物シリーズ

名前Materials Science Forum
580-582
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

OtherInternational Welding/Joining Conference-Korea 2007, IWJC 2007
CountryKorea, Republic of
CitySeoul
Period07/5/1007/5/12

ASJC Scopus subject areas

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

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