钛合金激光焊接研究现状  

Research status of laser welding titanium alloy

作　　者：聂璞林 李铸国[1,2] Nie Pulin;Li Zhuguo(Shanghai Key Laboratory of Materials Laser Processing and Modification,Shanghai 200240,China;Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海市激光制造与材料改性重点实验室,上海200240 [2]上海交通大学,上海200240

出　　处：《民用飞机设计与研究》2022年第1期95-103,共9页Civil Aircraft Design & Research

摘　　要：随着航空工业的发展,钛合金在航空结构中有着越来越广泛的应用。焊接作为重要的连接手段,其制造接头的力学性能决定了构件的使用性能。激光焊接具有高能束焊接方法热输入小、残余应力及变形小的特点,焊接质量高,并且能在开放环境中开展工作,已成为真空电子束焊接外另一种优秀的钛合金焊接方法,是近年研究的热点。总结了近期钛合金激光焊接的一些研究工作,重点介绍了关于激光焊接钛合金组织性能调控方面的成果,并讨论了钛合金激光焊所存在的问题,具体内容包括:激光类型和扫描方式对接头质量的影响、三种典型(α型、α+β型和β型)钛合金激光焊接头组织性能特点、焊后热处理对钛合金激光焊接头组织性能调控方法。为采用激光焊接方法制造高质量钛合金接头研究工作提供参考。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(αType,α+βType andβType)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.

关 键 词：钛合金 激光焊接 力学性能 组织调控 

分 类 号：TG456[金属学及工艺—焊接]