钛合金和不锈钢的扩散焊接-秦斌.pdf

第 14 卷第 9 期中国有色金属学报 2004 年 9 月
No .9 The Chinese Journal of Nonferrous Metals Sep .2004
文章编号:1004 0609(2004)09 1545 06
钛合金和不锈钢的扩散焊接①
秦斌1 , 盛光敏1 , 2 , 周波1 , 黄家伟1 , 李聪2 , 邱绍宇2
(1 .重庆大学材料科学与工程系, 重庆 400044 ;2 .核燃料及材料国家重点实验室, 成都 610041)
摘要:对 TA17 钛合金与 1Cr18Ni9Ti 不锈钢的焊接接头强度进行了实验研究。采用恒温恒压扩散焊、相变超塑
性扩散焊和脉冲加压扩散焊实现了钛合金和不锈钢的焊接, 测试了焊接接头的强度, 并对接头进行了金相观察。
结果发现:3 种接头的强度都达到了 264 MPa , 且接头为多层次的多相组织。物相分析发现钛合金不锈钢接头中
存在Fe2Ti和σ-(FeCr)两种脆性金属间化合物。脉冲加压扩散焊能促进扩散过程, 减少金属间化合物的形成, 改善
其分布, 是一种较有前景的扩散焊方法。
关键词:钛合金;不锈钢;扩散焊;金属间化合物
中图分类号:TG 文献标识码:A
Diffusion welding of titanium alloy and stainless steel
QIN Bin1 , SHENG Guang-min1 , 2 , ZHOU Bo1 , HUANG Jia-wei1 ,
LI Cong2 , QIU Shao-yu2
(1 .Department of Materials Science and Engineering ,
Chongqing University , Chongqing 400044 , China ;
2 .National Key Laboratory for Nuclear Fuel and Materials , Chengdu 610041 , China)
Abstract :The strength of welding joint between titanium alloy TA17 and stainless steel 1Cr18Ni9Ti was
joint was obtained by diffusion bonding at constant temperature and pressure , phase transformation superplastic diffusion bonding
and diffusion bonding under pulsatile pressure .The strength of welding joint was tested and metallography of welding joint was ob-
results show that the strength of joints obtained by three diffusion welding are all up to 264 MPa