高压时效处理对Cu54.27Cr45.73合金力学性能及电导率的影响  

Effect of high pressure ageing treatment on mechanical properties and electrical conductivity of Cu54.27Cr45.73 alloy

作　　者：赵军[1,2] 闫志刚[2] 陈久川[1] 文全兴[1] 杨永明[1] 孙欢迎 刘翊安 李红波[1] 孙艳荣[1] 

机构地区：[1]北华航天工业学院材料工程学院,河北廊坊065000 [2]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《材料热处理学报》2016年第1期18-22,共5页Transactions of Materials and Heat Treatment

基　　金：河北省自然科学基金(E2013409002);河北省教育厅科研基金(QN2014031;QN20131117);河北省高校百名优秀创新人才(BR2-239);河北省普通高等学校青年拔尖人才计划项目(BJ2014001);北华航天工业学院科研基金(KY-2014-06;KY-2014-24)

摘　　要：在3 GPa压力作用下对Cu54.27Cr45.73合金进行不同工艺的时效处理,通过硬度、压缩屈服强度和电导率测试及显微组织观察,探讨了高压时效处理对合金力学性能及电导率的影响。结果表明:高压时效处理能改善合金的力学性能及电导率,该合金经960℃×1 h(固溶)+在3 GPa压力下480℃×1 h的时效处理后可获得较高的力学性能和电导率,其硬度、压缩屈服强度和电导率分别为181 HV、249 MPa和17.86 MS/m,与相同时效温度和时效时间的常压时效处理合金相比,合金的硬度、压缩屈服强度和电导率分别提高17.53%、5.06%和4.94%。Cu54. 27Cr45. 73 alloy was treated with different aging processes under 3 GPa pressure,the effect of high pressure aging treatment on mechanical properties and electrical conductivity of the alloy was studied by hardness and compression tests,electrical conductivity measurement and microstructure observation. The results show that the mechanical properties and electrical conductivity of the alloy are improved by high pressure aging treatment. Good mechanical properties with hardness of 181 HV and compressive yield strength of 249 MPa,and higher electrical conductivity of 17. 86 MS / m of the alloy are obtained by solid solution at 960 ℃ for 1 h and then aging at 480 ℃ for 1 h under 3 GPa pressure,which increase by 17. 53%,5. 06% and 4. 94%,respectively,compared with the alloy under the condition of normal pressure,the same aging temperature and time.

关 键 词：Cu54.27Cr45.73合金 高压时效处理 力学性能 电导率 

分 类 号：TG146.1[一般工业技术—材料科学与工程]