摘要
针对钛合金无磁特性导致的超声残余应力测试结果不准确问题,设计了超声楔块贴合辅助装置,研究了超声楔块贴合辅助装置对超声信号采集的影响规律,并对TC4钛合金激光焊接试板残余应力分布特征进行了测量。试验结果显示,采用超声楔块贴合辅助装置后,超声楔块与钛合金表面耦合稳定性大幅提高,获得的钛合金焊接接头应力测试结果与小孔法测试结果基本一致。研究表明,超声楔块贴合辅助装置设计合理、实用性强。
To solve the inacuracy of ultrasonic residual stress test results caused by the non-magnetic characteristic of titanium alloy, an ultrasonic wedge fitting auxiliary device was designed. The influence of the ultrasonic wedge fitting auxiliary device on the ultrasonic signal acquisition was studied, and the residual stress distribution characteristic of TC4 titanium alloy laser welded the was measured. The experiment results show that the coupling stability between the ultrasonic wedge and the coupling stability between the ultrasonic wedge and the titanium alloy surface was elevated significantly when the ultrasonic wedge fitting auxiliary device was used. The stress test results of the titanium alloy welded joint are basically consistent with blind hole method. These results shows that the ultrasonic wedge fitting auxiliary device is reasonable and practical.
作者
丁稳稳
刘继雄
刘晶
张永强
王小翔
高晓龙
王俭
DING Wenwen;LIU Jixiong;LIU Jing;ZHANG Yongqiang;WANG Xiaoxiang;GAO Xiaolong;WANG Jian(School of Mechanical Engineering,Baoji University of Arts and Sciences,Baoji 721016,Shaanxi,China;ShaanxiProvince Key Laboratory of Advanced Manufacturing and Evaluation of Robot Key Componets,Baoji 721016,Shaanxi,China;Baoji Titanium Industry Co.,Ltd.,Baoji 721014,Shaanxi,China)
出处
《焊管》
2022年第6期27-32,38,共7页
Welded Pipe and Tube
基金
国家自然科学基金青年科学基金“钛/钢异种金属超声辅助双光束激光熔焊-熔钎焊双界面调控及成形机制研究”(项目编号51905006)
陕西省重点研发计划“航空航海用钛合金大厚板高速高质超声辅助激光填丝焊关键技术及设备研发”(项目编号2021GY-322)
宝鸡文理学院研究生创新科研项目“残余应力超声波检测关键技术研究”(项目编号YJSCX21YB25)。
关键词
钛合金
焊接残余应力
无损检测
超声波法
titanium alloy
welding residual stress
non-destructive testing
ultrasonic method
