With the development of aviation industry, titanium alloys are more and more widely used in the aircraft structural parts. Welding is an important joining process, and the mechanical property of the welded joint has a critical influence on the service performance of the fabricated part. Laser welding is one of high energy density beam welding technologies with advantages of low heat input, residual stress and deformation, which usually produce high-quality joint. Moreover, in comparison to electron beam welding, laser welding process can be operated in the air or inert gas without vacuum, and is another suitable welding technology for titanium alloy. Therefore, it has become a research hot spot in recent years. This paper reviews the recent researches on the laser welding titanium alloy, focuses on the achievements in the control of the microstructure and the resultant properties of laser welding titanium alloy, and discusses the problems existing in laser welding titanium alloy. The specific contents include: the influence of laser type and scanning mode on the quality of butt joint, three typical(α Type, α+β Type and β Type) microstructure and performance characteristics of titanium alloy laser welded joint and the regulation method of post weld heat treatment on the microstructure and performance of titanium alloy laser welded joint. This review offers a useful reference for the manufacture of high-quality titanium alloy joint using laser welding process.
聂璞林,李铸国.钛合金激光焊接研究现状[J].民用飞机设计与研 究,2022(1):95-103Nie Pulin, Li Zhuguo. Research status of laser welding titanium alloy[J]. Civil Aircraft Design and Research,2022,(1):95-103. ( in Chinese)复制