Abstract:The compressive creep behavior of as-cast AgInCd alloy was investigated by special modified apparatus on RDL-50 creep tester at 300~400 °C and compressive stress was in the range of 12~24 MPa. The relationship between temperature, stress and steady strain rate has been analyzed. The stress exponent n and apparent activation energy Qa of the creep process were calculated and based on the TEM images of microstructure the mechanisms of compressive creep behavior were discussed as well. The results show that the steady strain rate of the alloy increases with the increase of temperature and compressive stress. Compared with the exponential function, the relation between stress and rate seem to coincide with power function better. The stress exponent n are 3.31, 4.09 and 5.77 at the temperatures of 300 °C, 350 °C and 400 °C, respectively. The apparent activation energy Qa of the creep process are 68.1 kJ/mol, 103.7 kJ/mol and 131.6 kJ/mol under the compressive stress of 12 MPa, 18 MPa and 24 MPa, respectively. There are lots of stacking faults in the TEM images under each creep condition, which play a critical role in the creep mechanisms. Mechanical twinning is the main mechanism at 300 °C while dislocation climbing is the dominant mechanism at 400 °C.