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研究了时效温度和时间对Cu-0.3Cr-0.05Ti合金导电率的影响。结果表明:Cu-0.3Cr-0.05Ti合金在400℃×2 h时效,可获得83%IACS的导电率,随着时效时间的延长,导电率变化趋于平缓。根据导电率与新相的转变量之间的关系计算出时效过程中新相的转变比率,利用马基申-富列明格规律和Avrami经验方程,推导出Cu-0.3Cr-0.05Ti合金在不同时效温度的析出动力学方程,并得到合金不同时效温度的等温转变曲线。
The effects of aging temperature and time on the electrical conductivity of Cu-0.3Cr-0.05Ti alloy were investigated. The results show that the conductivity of Cu-0.3Cr-0.05Ti alloy reaches 83% IACS at 400 ℃ for 2 h, and the conductivity changes slowly with the aging time increasing. Based on the relationship between the conductivity and the amount of new phase transformation, the transformation ratio of new phase in the aging process was calculated, and the Cu-0.3Cr-0.05Ti alloy was derived by using the Markushchen-Fresnel’s law and the Avrami empirical equation Precipitation kinetics equation of different aging temperature, and get the isothermal transformation curve of different aging temperature of the alloy.