【摘要】 研究了时效温度和时效时间对Cu-3.2Ni-0.75Si-0.30Zn合金组织和性能的影响。结果表明,合金经900℃固溶,不同时间时效处理后,第二相呈弥散分布。合金经不同冷变形后时效,能获得较高的显微硬度与导电率,当时效温度达到500℃时,其显微硬度达到253.7Hv,导电率达到40%IACS。同时建立了该合金在500℃下,关于时效时间的一元导电率方程。时效前的预冷变形能够有力的促进合金在时效过程中第二相的析出,从而提高合金的显微硬度和导电率。更多还原

【Abstract】 The effect of aging temperature and aging time on microstructure and properties of Cu-3.2Ni-0.75Si-0.30Zn alloy were studied.The secondary phase was dispersive distribution in the alloy after the alloy was solution at 900℃ and then aged at various time.The high hardness and electrical conductivity were obtained after various cold deformation and then aged at various time.The hardness and electrical conductivity reach 253.7Hv and 40%IACS respectively after the alloy aged at 500℃.The electrical conductivity equation were obtained after aging at 500℃.In order to obtain high hardness and high electrical conductivity,the cold rolling prior to the aging treatment was used to increase the precipitation rate.更多还原