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对经过连铸连轧处理的Cu-Ni-Si-Mg合金进行时效,研究了时效温度和时效时间对该合金组织和性能的影响,并对该合金在不同温度下的时效动力学进行了分析。结果表明:合金在450℃时效2 h时能够获得较好的综合性能,其显微硬度和导电率分别为230 HV和35%IACS;通过对合金在时效过程中导电率的变化规律的分析,推导出合金在不同温度下时效的相变动力学方程和导电率方程,在此基础上做出了动力学“S”曲线和导电率方程曲线,该导电率方程与试验值吻合。
The effects of aging temperature and aging time on the microstructure and properties of Cu-Ni-Si-Mg alloy treated by continuous casting and rolling were studied. The aging kinetics of the alloy at different temperatures were also analyzed . The results show that the alloy has better comprehensive properties at 450 ℃ for 2 h, the microhardness and electrical conductivity are 230 HV and 35% IACS, respectively. Through the analysis of the conductivity of the alloy during the aging process, The phase transition kinetic equation and conductivity equation of the alloys aging at different temperatures were deduced. Based on these, kinetic curves of “S” and conductivity were obtained, which coincided with the experimental values.