Friction stir welding of titanium alloy using a co-based alloy tool

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The authors have developed a new friction stir welding (FSW) tool that allows the welding of high-softening-temperature materials (HST.Ms) , such as steels, titanium, and titanium and zirconium alloys. The new tool is made of a cobalt (Co)-based heat-resistant alloy strengthened by precipitated intermetallics,Co3(Al, W), with a A2 structure. The Co-based alloy tool exhibits yield strengths higher than 500 MPa at 1000 deg C, so that it has great potential as a tool material for FSW of HSTMs. In this study, the feasibility of using the Co-based alloy tool with titanium and titanium alloys was examined. Changes in the tool shape during FSW and the weld characterization produced with the Co-based alloy tool will be briefly shown.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
Pages1616-1620
Number of pages5
Publication statusPublished - 2012 Dec 1
Event12th World Conference on Titanium, Ti 2011 - Beijing, China
Duration: 2011 Jun 192011 Jun 24

Publication series

NameTi 2011 - Proceedings of the 12th World Conference on Titanium
Volume2

Other

Other12th World Conference on Titanium, Ti 2011
CountryChina
CityBeijing
Period11/6/1911/6/24

Keywords

  • Cobalt (Co)-based alloy tool
  • Friction stir welding (FSW)
  • Microstructure
  • Titanium (Ti) alloy
  • Wear

ASJC Scopus subject areas

  • Ceramics and Composites

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