钛合金与不锈钢的相变超塑性扩散焊接  

Phase Transformation Diffusion Bonding of Titanium Alloy to Stainless Steel

作　　者：黄家伟[1] 盛光敏[1] 周波[1] 秦斌[1] 邱绍宇 李聪 

机构地区：[1]重庆大学材料科学与工程学院,重庆400030 [2]核燃料及材料国家重点实验室,四川成都610041

出　　处：《重庆大学学报（自然科学版）》2005年第9期48-52,共5页Journal of Chongqing University

基　　金：重庆市应用基础研究资助项目(7942);核燃料及材料国家重点实验室资助

摘　　要：在航天、化工等领域经常需要对钛合金和不锈钢进行焊接.不锈钢和钛合金的复合构件能充分发挥2种材料的优点,并能节约宝贵的钛资源.利用相变超塑性扩散焊接方法,在G leeble-1500D型热模拟试验机上对TA17钛合金与0Cr18N i9Ti不锈钢进行了焊接试验,并对热循环上限温度的影响、接头拉伸强度、断口形貌、显微组织、物相组成和元素成分分布等进行了分析.结果发现,焊接接头中形成了TiFe、TiFe2、固溶体等物相,而且随着上限温度的升高,断口上金属间化合物所占面积比例增大,从而造成接头强度降低.Jointing of titanium alloy and stainless steel is very often in the fields like aviation, chemical plants etc. The combination of materials has the advantages of both titanium alloy and stainless steel and will reduce the consumption of titanium resource. The phase transformation diffusion bonding of TA17 titanium alloy to 0CriSNigTi stainless steel are carried out on Gleeble - 1500D. The effcet of maximum thermal cycle temperature, the tensile strength, the fracture surface and microstruture of the joints are investigated. The results show that TiFe and TiFe2 intermetallics and some solid solutions are formed along the interface, when maximum thermal cycle temperature increase, the area proportion of intermetallics in the fracture surface increase, which are detrimental to the mechanical properties of the transition joints.

关 键 词：相变超塑性 扩散焊接 钛合金 不锈钢 性能:组织 

分 类 号：TG453.9[金属学及工艺—焊接]