High speed welding of friction-stir-welding for mild steel by gas-tungsten-arc-welding hybrid process

Itto Sugimoto, Seung Hwan C. Park, Satoshi Hirano, Satoshi Hata, Yutaka S. Sato, Hiroyuki Kokawa, Kiyohito Ishida

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

For the purpose of higher welding speed and lower force in friction-stir-welding (FSW), we investigated the feasibility of preheating using gas-tungsten- arc-welding (GTAW). It can be expected to assist heat input for the plastic flow by using GTAW with high energy density. Defect-free bonding by a GTAW-FSW hybrid process was successfully achieved at a welding speed less than 8.3mm/s, while normal FSW left a defect at welding speed of 5.0mm/s. The axial forces during friction stirring in the GTAW-FSW process were lower than 40% of that in the normal FSW. The joints of GTAW-FSW had stir zones with fine grains similar to the FSW joints. This process could obtain higher productivity, that is, higher welding speed and lower force than the conventional FSW. It is also possible to obtain a high strengthen and unique structure with fine grains of FSW.

本文言語英語
ページ(範囲)26-30
ページ数5
ジャーナルYosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society
36
1
DOI
出版ステータス出版済み - 1 1 2018

All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 表面、皮膜および薄膜
  • 金属および合金

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