Friction-stir welding of high-softening-temperature materials using cobalt-based alloy tool

Seung Hwan C. Park; Satoshi Hirano; Shinya Imano; Yutaka S. Sato; Hiroyuki Kokawa; Toshihiro Omori; Kiyohito Ishida

doi:10.4028/www.scientific.net/MSF.706-709.996

Friction-stir welding of high-softening-temperature materials using cobalt-based alloy tool

Seung Hwan C. Park, Satoshi Hirano, Shinya Imano, Yutaka S. Sato, Hiroyuki Kokawa, Toshihiro Omori, Kiyohito Ishida

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

The authors have developed a new friction-stir welding (FSW) tool that enables to weld high-softening-temperature materials (HSTMs), such as steels, titanium and zirconium alloys. The new tool is made of a Co-based heat-resistant alloy strengthened by precipitating intermetallics, Co₃(Al,W), with a L1₂ structure at high temperatures. The Co-based alloy tool exhibits yield strengths higher than 500 MPa at 1000 deg C, so it might have a great potential as a tool material for FSW of HSTMs. In this study, the feasibility of using the Co-based alloy tool with various HSTMs was examined. Changes in the tool shape during FSW and the weld appearances produced with the Co-based alloy tool will be briefly shown.

Original language	English
Title of host publication	THERMEC 2011
Publisher	Trans Tech Publications Ltd
Pages	996-1001
Number of pages	6
ISBN (Print)	9783037853030
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.706-709.996
Publication status	Published - 2012 Jan 1
Event	7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada Duration: 2011 Aug 1 → 2011 Aug 5

Publication series

Name	Materials Science Forum
Volume	706-709
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Other

Other	7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Country	Canada
City	Quebec City, QC
Period	11/8/1 → 11/8/5

Keywords

Co-based alloy
Friction stir welding
Steel
Ti alloy
Tool
Zr alloy

ASJC Scopus subject areas

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

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Cite this

Park, S. H. C., Hirano, S., Imano, S., Sato, Y. S., Kokawa, H., Omori, T., & Ishida, K. (2012). Friction-stir welding of high-softening-temperature materials using cobalt-based alloy tool. In THERMEC 2011 (pp. 996-1001). (Materials Science Forum; Vol. 706-709). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.706-709.996

Friction-stir welding of high-softening-temperature materials using cobalt-based alloy tool. / Park, Seung Hwan C.; Hirano, Satoshi; Imano, Shinya; Sato, Yutaka S.; Kokawa, Hiroyuki; Omori, Toshihiro; Ishida, Kiyohito.

THERMEC 2011. Trans Tech Publications Ltd, 2012. p. 996-1001 (Materials Science Forum; Vol. 706-709).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Park, SHC, Hirano, S, Imano, S, Sato, YS, Kokawa, H, Omori, T & Ishida, K 2012, Friction-stir welding of high-softening-temperature materials using cobalt-based alloy tool. in THERMEC 2011. Materials Science Forum, vol. 706-709, Trans Tech Publications Ltd, pp. 996-1001, 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011, Quebec City, QC, Canada, 11/8/1. https://doi.org/10.4028/www.scientific.net/MSF.706-709.996

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N2 - The authors have developed a new friction-stir welding (FSW) tool that enables to weld high-softening-temperature materials (HSTMs), such as steels, titanium and zirconium alloys. The new tool is made of a Co-based heat-resistant alloy strengthened by precipitating intermetallics, Co3(Al,W), with a L12 structure at high temperatures. The Co-based alloy tool exhibits yield strengths higher than 500 MPa at 1000 deg C, so it might have a great potential as a tool material for FSW of HSTMs. In this study, the feasibility of using the Co-based alloy tool with various HSTMs was examined. Changes in the tool shape during FSW and the weld appearances produced with the Co-based alloy tool will be briefly shown.

AB - The authors have developed a new friction-stir welding (FSW) tool that enables to weld high-softening-temperature materials (HSTMs), such as steels, titanium and zirconium alloys. The new tool is made of a Co-based heat-resistant alloy strengthened by precipitating intermetallics, Co3(Al,W), with a L12 structure at high temperatures. The Co-based alloy tool exhibits yield strengths higher than 500 MPa at 1000 deg C, so it might have a great potential as a tool material for FSW of HSTMs. In this study, the feasibility of using the Co-based alloy tool with various HSTMs was examined. Changes in the tool shape during FSW and the weld appearances produced with the Co-based alloy tool will be briefly shown.

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