Abstract:In order to study the change of static mechanical properties of heterogenous self-piercing riveted joints in steel-aluminium for salt and acid corrosion, dry-wet periphery immersion accelerated corrosion test was carried out on self-piercing riveted specimens in DP590-50529 (DA). The weight loss, failure mode and static load performance of joints at different corrosion times were analyzed by corrosion kinetics and static test. The results show that in salt corrosion environment, the weight loss of steel-aluminium specimens (YDA) group shows an upward trend, while the corrosion rate decreases; in acid corrosion, the weight loss of steel-aluminium specimens (SDA) group first increases and then decreases, and the corrosion rate also shows the same trend. The effect of acid corrosion on joint failure mode is more significant. The static strength of the joint are affected by both kinds of corrosions, and the corrosion resistance of the joint to salt environment is smaller.