Forming Mechanism of Flash in Linear Friction Welded Dissimilar Alloys of TC11 and Ti2AlNb

摘要：

The macro and microstructures of the flash(upset metal)in linear friction welded TC11 and Ti2AlNb were observed. The flash was formed under action united friction press and shear force produced due to specimen motion. The expelled metal mainly was TC11 alloy and the axial shortening mainly happened in TC11 side. In the friction process, the interface temperature was above Ti2AlNb phase transformation point. From interface to inside of alloys, the grains size gradually became large due to the temperature effect in heat affected zone. Owing to the time limited,diffusion of alloying element was not enough resulting in large fluctuation on either side of the welding interface.

关键词： Linear friction welding dissimilar alloys interface microstructure

作者: Chun Qin Zekun Yao Lijun Tan Hongzhen Guo Jianwei Zhang

作者单位: School of Materials Science and Engineering,Northwestern Polytechnical University,Xian 710072 China Central Iron and Steel Research Institute,Beijing 100081 China

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: 219-222

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）