介绍了钛合金激光焊接的技术特点，综述了异种钛合金、钛合金与钢、钛合金与铝、钛合金与非金属材料的激光焊接研究现状，重点论述了激光器、激光焊接工艺参数及焊接方式等对焊接接头组织及性能的影响。通过论述，认为国内钛与异种材料的激光焊接水平与国外相比还存在一定差距。最后，给出钛合金激光焊接技术的主要发展方向：①深入基础研究，实现对激光处理过程的实时监测与闭环控制；②寻求大功率激光焊接技术的突破与发展；③开发TIG-激光复合钎焊等技术，推进激光焊接技术的产业化进程。
This paper discusses the technical characteristics of laser welding titanium alloy, and introduces the research status of laser welding in the different types of titanium alloy, titanium alloy and steel, titanium alloy and aluminum, titanium alloy and non -metallic materials. The effects of laser, laser welding process parameter and welding method on the microstructure and mechanical properties of joint are also discussed. And it is concluded that there are still some gaps compared with the laser welding of titanium and dissimilar materials of foreign countries. Finally, the future development of titanium alloy laser welding technology is pointed out: ①to develop basic research, and to realize real-time monitoring and closed-loop control of laser process; ②to seek a breakthrough and development of high-power laser welding technology; ③to develop TIG-such as the laser composite brazing technology, promoting the industrialization of laser welding technology.
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