Friction Stir Welding of Titanium Alloy using a Co-based Alloy Tool

摘要：

The authors have developed a new friction stir welding (FSW) tool that allows the welding of highsoftening-temperature materials (HSTMs), such as steels, titanium, and titanium and zirconium alloys. The new tool is made of a cobalt (Co)-based heatresistant alloy strengthened by precipitated intermetallics,Co3 (A1,W),with a Ll2 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 wili be briefly shown.

关键词： Friction stir welding (FSW) cobalt (Co)-based alloy tool titanium (TO alloy microstructure wear

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

作者单位: Hitachi Research Laboratory, Hitachi,Ltd,7-1-1 Omika-cho, Hitachi 319-1292 Japan Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba ,Aoba-ku, Sendai 980-8579 Hitachi Research Laboratory, Hitachi,Ltd, 7-1-1 Omika-cho, Hitachi 319-1292 Japan

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 1616-1620

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）