热轧态Cu-Ni-Si-Mg合金的时效动力学  

Aging kinetics of Cu-Ni-Si-Mg alloy

作　　者：王俊峰[1] 贾淑果[1,2] 陈少华 刘平[1] 宋克兴[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003 [3]中铝洛阳铜业有限公司,河南洛阳471039

出　　处：《材料热处理学报》2012年第7期33-36,共4页Transactions of Materials and Heat Treatment

基　　金：国家高新技术研究发展计划(863)资助项目(2006AA03Z528);河南省教育厅科技攻关项目(2009A430007);河南科技大学科研创新能力培育基金项目(2010CZ0008)

摘　　要：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。Effects of aging temperature and aging time on microstructure and properties of a Cu-Ni-Si-Mg alloy which was produced by continuous casting and rolling process were investigated, and the aging kinetics of the alloy was analyzed. The results show that a better combination of properties is obtained for the alloy aged at 450 ℃ for 2 h, the microhardness and electrical conductivity of the alloy are 242 HV and 35.53% IACS, respectively. Both phase transformation kinetics equation and electrical conductivity equation are derived in terms of the analyses of the electrical conductivity variations during aging, and the transformation kinetics and the electrical conductivity equation curves are obtained. The results obtained by the electrical conductivity equations are in good agreement with the experimental values.

关 键 词：Cu-Ni-Si-Mg合金 时效析出 导电率方程 相变动力学 

分 类 号：TG146.1[一般工业技术—材料科学与工程]