摘要
利用铜镍锡磷系非晶合金箔作为中间层,使用氩气保护,在不同的连接温度采用瞬时液相扩散焊对TA2钛板进行了连接,并通过光学显微镜、显微硬度仪和材料试验机研究了连接温度对接头组织、显微硬度和剪切强度的影响。结果表明:连接温度低于840℃时,液态中间层等温凝固没有完成,能观察到残留的中间层;随着连接温度的升高,原子扩散加快,残留中间层逐渐减少;870℃时,连接接头组织全部为固溶体;连接温度为850℃时,连接接头具有最高的剪切强度,约为180 MPa。
Titanium TA2 plates were joined by transient liquid phase bonding at different bonding temperatures in argon atmosphere,using Cu-Ni-Sn-P amorphous foils as interlayer.Influence of bonding temperature on the microstructure,micro-hardness and shear strength of the joints were investigated by an optical microscope,a micro-hardness tester and a material tester.The results show that the isothermal solidification of the liquid interlayer did not complete at the bonding temperature lower than 840 ℃,and the remaining interlayer could be observed.Atomic diffusion speeded up and the remaining interlayer reduced gradually with the increase of bonding temperature;the microstructure of the joints were all solid solution at 870 ℃.The joints had the highest shear strength around 180 MPa when the bonding temperature was 850 ℃.
出处
《机械工程材料》
CAS
CSCD
北大核心
2015年第4期19-22,28,共5页
Materials For Mechanical Engineering
基金
河南省科技攻关项目(142102210434)
关键词
TA2钛板
瞬时液相扩散焊
连接温度
显微组织
剪切强度
TA2 titanium plate
transient liquid phase bonding
bonding temperature
microstructure
shear strength
