Q235/5083异种材料自冲铆接头力学性能的研究

通过异种材料Q235钢板和5083铝板进行自冲铆接，分别研究了组合方式、板厚、接头热处理（模拟车身烘烤过程）等工艺因素对接头力学性能的影响，结果表明:5083铝板作为下板时接头的性能更优，并且Q235上板板厚对接头的性能有一定的优化作用.在该实验中，接头b#的组合方式是较优的工艺参数，即1.5 mm Q235-2.0 mm5083；经过烘烤后接头的失效载荷和失效位移都有不同程度的增加，其中性能较优的接头b#经烘烤后失效载荷提升了5.80 %，失效位移提升了8.26 %；汽车车身涂装过程中进行烘烤作业对接头的性能不会造成强度损失，相反还会对接头力学性能和稳定性有一定程度的优化作用. 

Mechanical properties of Q235/5083 dissimilar material self-impact riveting head

In this paper, it was studied that the effects of combination mode, plate thickness and heat treatment of joints on mechanical properties of joints by using Q235 steel sheet and 5083 aluminum sheet. The experimental results showed that the performance of the joint was better when the 5083 aluminum sheet was used as the lower plate, and the thickness of Q235 upper plate had a certain effect on the optimization for the performance of the joint. In this experiment, the combination mode of joint b# was the best process parameter, which was 1.5mm Q235-2.0 mm 5083.After being baked, the joint was neutral, and its failure load and displacement increased in varying degrees. For example, the failure load of joint b# increased by 5.80 %, and 8.26 % for its failure displacement. During the process of automobile body painting, the mechanical properties and stability of the joint could be optimized to a certain extent by being baked, which would not result in the loss of strength of the joint.