TiAl合金钎焊研究进展  

Research Progress of TiAl Alloy Brazing

作　　者：关洪星 杨海瑛[2] 毛小南[2] 李磊[2] Guan Hongxing;Yang Haiying;Mao Xiaonan;Li Lei(Northeastern University,Shenyang 110819,China;Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China)

机构地区：[1]东北大学,辽宁沈阳110819 [2]西北有色金属研究院,陕西西安710016

出　　处：《钛工业进展》2022年第6期43-48,共6页Titanium Industry Progress

基　　金：陕西省重点研发计划项目(2020ZDLGY01-08)。

摘　　要：TiAl合金钎焊因具有无气体杂质、对母材力学性能影响小、钎料成分易控制等突出优点而被广泛应用。概述了TiAl合金的发展历程及其组织特点,重点介绍了TiAl合金钎料种类以及钎焊工艺对焊接接头组织与性能的影响,最后指出TiAl合金钎焊技术的发展方向:加强焊接接头的动态试验研究,如疲劳性能、冲击韧性及蠕变试验;从扩散机理出发,首先进行热力学和动力学分析,再根据母材成分变化设计专用钎料;进一步扩展TiAl合金钎焊技术的应用领域。TiAl alloy brazing is widely used because of its outstanding characteristics,such as no gas impurities,little influence on mechanical properties of the base metal,and easy control of solder composition.The development history and structure characteristics of TiAl alloy are described,with emphasis on the types of TiAl alloy brazing solders and the influence of brazing process on the structure and properties of welded joints.Finally,the development direction of TiAl alloy brazing technology is pointed out:strengthen the dynamic test research of welded joints,such as fatigue property,impact toughness and creep test;based on the diffusion mechanism,the thermodynamics and dynamics analysis are carried out first,and then the special solder is designed according to the change of the base metal composition;further expand the application field of TiAl alloy brazing technology.

关 键 词：TIAL合金 钎焊技术 钎料种类 

分 类 号：TG457.19[金属学及工艺—焊接] TG146.23[一般工业技术—材料科学与工程]