In the paper, in order to study mechanical properties of single-lap self-pierce riveted joints in dissimilar
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-AA5052 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 AA5052-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.