摘要
研究了热处理与冷变形对引线框架材料Cu-Fe-P合金导电率、显微硬度、耐热性的影响。结果发现,低温时效时,极为细小的析出物在冷轧过程中可以溶入铜基体,从而使得导电率大幅度下降;同时耐热性主要依赖于固溶处理温度以及随后的时效条件。精整变形后合金性能可达:导电率68%IACS、显微硬度165HV;在450℃加热5min合金未观察到软化。
The effects of heat-treatment and cold deformation on electric conductivity and microhardness,heat-resistance of Cu-Fe-P alloy,which is used as a leadframe material,were studied.Results show that the fine precipitates can be solutionized into Cu matrix during the large cold rolling when aging at low temperature which leading up to the sharp decrease of electric conductivity.In the meanwhile,heat-resistance relies heavily on solution treatment temperature and subsequent aging condition.After fine deformation,the alloy′s properties can reach 68%IACS in electric conductivity,165HV in microhardness with heat-resistance:on softening occure when aging at 450℃ for 5min.
出处
《热加工工艺》
CSCD
北大核心
2005年第1期23-25,28,共4页
Hot Working Technology
基金
国家自然基金资助项目(50071026)
关键词
CU-FE-P合金
导电率
显微硬度
耐热性
时效
冷变形
Cu-Fe-P alloy
electric conductivity
microhardness
heat-resistance
aging
cold deformation
