Performance enhancement of Co-based alloy tool for friction stir welding of ferritic steel

Yutaka Sato, Masahiro Miyake, Shinichi Susukida, Hiroyuki Kokawa, Toshihiro Omori, Kiyohito Ishida, Shinya Imano, Seung Hwan C Park, Itto Sugimoto, Satoshi Hirancr

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

Co-based alloy tools having the γ/γ′ microstructure with distribution of hard phases hardly experience large deformation and severe wear during friction stir welding (FSW) of ferritic steels at the welding temperature lower than the γ′-solvus. Further examinations implied that the tool wear were suppressed more effectively on Co-based alloy tool with larger volume fraction of hard phases with average size of 2 to 5 μn. In this study, Co-based alloy tools with different volume fractions of hard phases were designed, and effect of hard phases on tool wear was examined in FSW of 0.45% carbon steel. FSW trial showed that the tool wear decreased with increasing volume fraction of hard phases. At the volume fraction of 36%, the wear volume was successfully reduced to two third of that of the tool exhibiting the good wear resistance in a previous study. This study showed a possibility that the tool performance is effectively enhanced by further microstructure optimization of the tool material.

本文言語English
ホスト出版物のタイトルTMS Annual Meeting
出版社Minerals, Metals and Materials Society
ページ39-46
ページ数8
2015-January
ISBN(印刷版)9781119082491
出版ステータスPublished - 2015
イベントFriction Stir Welding and Processing VIII - TMS 2015 144th Annual Meeting and Exhibition - Orlando, United States
継続期間: 2015 3月 152015 3月 19

Other

OtherFriction Stir Welding and Processing VIII - TMS 2015 144th Annual Meeting and Exhibition
国/地域United States
CityOrlando
Period15/3/1515/3/19

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金

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