TY - GEN
T1 - Development of a cobalt-based alloy FSW tool for high-softening-temperature materials
AU - Sato, Yutaka
AU - Miyake, Masahiro
AU - Kokawa, Hiroyuki
AU - Omori, Toshihiro
AU - Ishida, Kiyohito
AU - Imano, Shinya
AU - Park, Seung Hwan C.
AU - Hirano, Satoshi
PY - 2011/7/27
Y1 - 2011/7/27
N2 - The authors have developed a new friction stir welding (FSW) tool that enables welding of high-softening-temperature materials, such as steels, and titanium alloys. The new tool is made of a Co-based alloy strengthened by precipitating intermetallics, Co3(Al,W), with an Ll2 structure at high temperatures. The Co-based alloy tool can be manufactured at a low cost through a simple production method consisting of casting, heat-treatment, and then machining. It exhibits yield strengths higher than 500 MPa at 1000°C, so that it might have great potential as a FSW tool for high-softening- temperature materials. In this study, the feasibility to use the Co-based alloy tool to friction stir weld various high-softening-temperature materials was examined. Changes in 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 welding of high-softening-temperature materials, such as steels, and titanium alloys. The new tool is made of a Co-based alloy strengthened by precipitating intermetallics, Co3(Al,W), with an Ll2 structure at high temperatures. The Co-based alloy tool can be manufactured at a low cost through a simple production method consisting of casting, heat-treatment, and then machining. It exhibits yield strengths higher than 500 MPa at 1000°C, so that it might have great potential as a FSW tool for high-softening- temperature materials. In this study, the feasibility to use the Co-based alloy tool to friction stir weld various high-softening-temperature materials was examined. Changes in tool shape during FSW and the weld appearances produced with the Co-based alloy tool will be briefly shown.
KW - Co-based alloy
KW - Friction stir welding
KW - Steels
KW - Ti alloys
KW - Tool
UR - http://www.scopus.com/inward/record.url?scp=79960645839&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960645839&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79960645839
SN - 9781118002018
T3 - TMS Annual Meeting
SP - 3
EP - 9
BT - Friction Stir Welding and Processing VI - Held During the TMS 2011 Annual Meeting and Exhibition
T2 - Friction Stir Welding and Processing VI - Held During the TMS 2011 Annual Meeting and Exhibition
Y2 - 27 February 2011 through 3 March 2011
ER -