The mechanical properties and static failure mechanism of the titanium, aluminum lithium and aluminum
alloy self-piecing riveted joints were studied by the self-piecing riveting system, materials test machine and scanning
electron microscope. The results showed that the average maximum tensile shear load of the TA1 joints(6 285. 0
N) is the largest, the 8090 joints took the second place, the 5052 joints is the smallest. Different metal materials selfpiecing
riveted joints presented a great different static failure mode. The rivets in TA1 joints appeared a failure process
from intergranular fracture to ductile fracture. The 8090 joints appeared a failure process of the materials being rubbed
and cleavage fracture. The 5052 joints appeared a failure process of the materials only being rubbed.