钛合金异种材料单搭自冲铆接头力学性能  

Mechanical Properties of Single-Lap Self-Pierce Riveted Joints in Dissimilar Sheets of Titanium Alloy

作　　者：卢毅[1] 何晓聪[1] 王医锋 刘福龙[1] 

机构地区：[1]昆明理工大学机电工程学院,昆明650500

出　　处：《宇航材料工艺》2015年第3期76-80,共5页Aerospace Materials & Technology

基　　金：国家自然科学基金资助项目(50965009);昆明理工大学分析测试基金项目(20130576)

摘　　要：为研究钛合金异种材料单搭自冲铆接头的力学性能,本文使用接头剖面直观检测法分析了四种铆接接头的成形质量,先后对铜-钛合金接头(H62-TA1接头)和钛-铝合金接头(TA1-AA5052接头)进行准静态力学性能测试,得到了两种接头的载荷-位移曲线。采用狄克逊准则剔除异常值,并通过变差系数法验证了试验数据的可靠性。研究结果表明:H62-TA1接头质量优于TA1-H62接头,TA1-AA5052接头质量优于AA5052-TA1接头;H62-TA1接头强度(5 177.8 N)高于TA1-AA5052接头(4 296.9 N),H62-TA1接头能量吸收值(21.9 J)大于TA1-AA5052接头(10.2 J);H62-TA1接头失效模式为铆钉拉出失效,TA1-AA5052接头失效模式为下板拉断失效。In the paper, in order to study mechanical properties of single-lap self-pierce riveted joints in dissimi- lar sheets of titanium alloy, the method of cross-section visual verification were applied to analyze the quality of four joints. The quasi static mechanical properties test was used to test mechanical properties of copper alloy-titanium alloy joints（ H62-TA1 joints） and titanium alloy-aluminum alloy（TA1-AAS052 joints） , and the load-displacement curve of the two joints was acquired from the test. The Dixon guideline was used to reject abnormal values, and the method of coefficient of variation was used to verify the reliability of the test data. The results show that the H62-TA1 joint is superior to the TA1-H62 joint, and the TA1 -AA5052 joint is superior to the AAS052-TA1 joint. The strength of the H62-TA1 joint （5 177.8 N） is higher than the TA1-AA5052 joint （4 296.9 N）, and the energy absorption value of the H62-TA1 joint （21.9 J） is greater than the TA1-AA5052 joint （ 10.2 J）. The failure mode of the H62-TA1 joint is the rivet being pull out, and the failure mode of theTA1-AA5052 joint is the lower sheet being snapped.

关 键 词：自冲铆 单搭接头 钛合金 准静态力学性能 失效模式 

分 类 号：TH131.1[机械工程—机械制造及自动化]