对经过连铸连轧的Cu-Ni-Si-Mg合金进行时效处理,研究了时效温度和时效时间对合金组织和性能的影响。结果表明:该合金经时效后,析出相呈弥散分布;在同一时效温度下,电导率在初期迅速上升,之后逐渐平缓;当时效时间相同时,时效温度越高,电导率越大。随着时效温度的升高,合金的显微硬度峰值越低,到达峰值所用的时间越短。热轧态Cu-Ni-Si-Mg合金经450℃时效2 h后,可以获得相对良好的综合性能,其显微硬度达到231 HV,电导率达到34%IACS。 The Cu-Ni-Si-Mg alloy after continuous casting and rolling was aged, and the effects of aging temperature and aging time on the microstructure and properties of the alloy were studied. The results show that the precipitated phase is diffusely distributed after aging. At the same aging temperature, the conductivity increases rapidly in the initial stage and then gradually decreases. When the aging time is the same, the higher the aging temperature is, the higher the conductivity is. As the aging temperature increases, the lower the peak hardness of the alloy, the shorter the time it takes to reach the peak. The hot rolled Cu-Ni-Si-Mg alloy after 450 ℃ aging 2 h, you can get relatively good overall performance, the microhardness of 231 HV, the conductivity of 34% IACS.