Abstract: In order to explore the influence of corrosion on the performance of self-piercing riveted (SPR) joints in 5052 aluminum alloy (AA5052), 0.6 mol/L NaCl solution was used as the corrosive liquid, and the corrosion was accelerated by periodic immersion. The joints with different corrosion times were subjected to static and fatigue tests. The F-N curve of each joint was fitted based on power function, the fatigue fracture of the joint was analyzed by SEM, and the fatigue life of the corroded joint was predicted based on the Paris formula and related inferences. The results show that corrosion has no adverse influence on the static performance and failure mode of the joint during the corrosion durations studied in this paper; the fatigue life of uncorroded joints is generally higher than that of corroded joints, and the range of changes in the medium life zone is the most obvious. Corrosive medium and load level affect the fatigue life of the joints together; the short-term salt corrosion will not only change the failure characteristics of the joint fatigue fracture, but also make the joint produce multiple fatigue cracks. The fatigue life prediction method has a better prediction effect for the medium and short life zones.
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2022, Vol. 36 
