Ti60钛合金扩散连接界面组织及剪切性能  

Microstructure and shear properties of diffusion bonding interface forTi60 titanium alloy

作　　者：廖子颖 李保永[1] 刘伟 秦中环 吴迪鹏 吴腾飞 武永 Liao Ziying;Li Baoyong;Liu Wei;Qin Zhonghuan;Wu Dipeng;Wu Tengfei;Wu Yong(Beijing Hangxing Machine Manufacturing Co.,Ltd.,Beijing 100013,China;College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]北京航星机器制造有限公司,北京100013 [2]南京航空航天大学机电学院,江苏南京210016

出　　处：《锻压技术》2024年第6期172-178,共7页Forging & Stamping Technology

基　　金：国家重点研发计划资助项目(2023YFB3407000);国防基础科研计划(JCKY2021204A004)。

摘　　要：在保温温度为900~960℃、保压压力为1~3MPa、保温保压时间为0.5~3.0h的条件下Ti60钛合金进行了扩散连接试验,测得扩散连接界面的剪切强度,并采用金相法测定了扩散连接界面的焊合率,分析了扩散连接条件对原始板材轧制方向室温拉伸性能的影响。试验结果表明:随着保温温度、保压压力增大以及保温保压时间延长,Ti60钛合金板材扩散连接界面的焊合率增加,剪切强度增大;在960℃/2MPa/2h的试验条件下,焊合率达到98.5%,剪切强度达到559.6MPa。Ti60钛合金板材经940℃/2h高温保温后,室温抗拉强度由1154.5MPa降低至994.1MPa;保温温度达到940℃后,升高温度和延长保温保压时间对Ti60钛合金的室温强度影响不大。The diffusion bonding experiments of Ti60 titanium alloy were carried out under the conditions of the holding temperature of 900-960 C,the holding pressure of 1-3 MPa and the holding time of 0.5-3.0 h.The shear strength of diffusion bonding interface was measured,and the bonding rate of diffusion bonding interface was measured by metallographic method.The effect of diffusion bonding conditions on the tensile properties of original sheet at room temperature in the rolling direction was analyzed.The experiment results show that the bonding rate and the shear strength of diffusion bonding interface for Ti60 titanium alloy sheet increase with the increasing of hold-ing temperature,holding pressure and holding time.The bonding rate reaches 98.5%and the shear strength reaches 559.6 MPa under the experiment condition of 960 C/2 MPa/2 h.The tensile strength of Ti60 titanium alloy sheet at room temperature decreases from 1154.5 MPa to 994.1 MPa after holding at 940℃C for two hours.When the holding temperature reaches 940℃,increasing the tempera-ture and holding time have little effect on the strength of Ti60 titanium alloy at room temperature.

关 键 词：Ti60钛合金 扩散连接 剪切强度 界面组织 焊合率 

分 类 号：TG131[一般工业技术—材料科学与工程]