摘要
通过硬度、电导率、光学显微镜和透射电镜等测试手段分析Cu-0.7Fe-0.12P合金的性能与组织,研究形变及时效处理对其组织与性能的影响,得出冷变形量与热处理工艺的优化组合,为该合金的实际生产提供参考。合金经900℃固溶并40%冷轧、450℃时效6 h、70%冷轧后,在400、450和500℃分别时效1 h。研究结果表明,在450℃时效合金的硬度(141 HV)和相对电导率(89.9%IACS)均达到了较好的状态;而直接对合金冷轧变形80%并在450℃下时效1 h后,相对电导率为70%IACS,比经双冷轧双时效处理后测得的合金相对电导率小。
The micro-hardness and electrical conductivity of Cu-0.7Fe-0.12P alloy under different thermo-mechanical conditions were measured, and the microstructure of the alloy were examined by optical microscopy and transmission electron microscopy with the aim of finding a suitable thermo-mechanical process for the alloy as a reference to industrial production. The alloy was cold rolled with 40% deformation and aging at 450 ℃ for 6 h. Then the following step was deformation of 70% cold rolling. Samples were aged for 1 h at 400, 450 and 500 ℃, respectively. Sample aged at 450 ℃ had the most highest micro-hardness （141 HV） and electrical conductivity （89.9% IACS）. Directly compared with cold rolling of 80% deformation and aging at 450 ℃ for 1 h, the properties of the samples under former process are better.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2015年第3期464-469,共6页
Materials Science and Engineering of Powder Metallurgy
基金
中南大学贵重仪器设备开放共享基金(CSUZC20140012)
