Cu-Cr-Fe合金的时效析出行为  

Aging Characteristics of Cu-Cr-Fe Alloy

作　　者：帅歌旺[1] 郭正华[1] 方平[1] 黄惠珍[2] 

机构地区：[1]南昌航空大学材料科学与工程学院 [2]南昌大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2009年第9期872-875,共4页Special Casting & Nonferrous Alloys

基　　金：南昌航空大学科研基金(EA200501145)

摘　　要：采用真空熔炼方法制备了Cu-0.32Cr-1.82Fe、Cu-0.33Cr和Cu-1.87Fe合金,随后分别进行了固溶-时效和固溶-冷变形-时效处理。采用XRD物相分析、点阵参数测量、硬度和电导率测试等手段,研究了合金在不同热处理状态下的时效行为。结果表明,同时添加Cr、Fe元素能够显著提高合金硬度,但对导电性能影响不大。Cu-0.32Cr-1.82Fe合金经1000℃×2h固溶处理、80%变形,在480℃时效60min后其硬度(HV)和电导率分别可达215和31.9MS/m。Cu-0.32Cr-1.82Fe,Cu-0.33Cr and Cu-1.87Fe alloys were prepared by vacuum melting,subsequently,the alloy ingots were treated by solution plus aging and solution-cold deformation-aging. Aging characteristics of three alloys were investigated by XRD (X-ray diffraction),hardness and electrical conductivity measurements as well as lattice parameters measurement. It is found that although Cr and Fe addition can greatly improve the hardness of the alloy,it plays somewhat role in electrical conductivity of the alloy. The micro-hardness and electrical conductivity of Cu-0.32Cr-1.82Fe alloy reach 215HV and 31.9MS/m after solution treatment at 1000℃ for 2 hours and 80% cold deformation and aging at 480℃ for 1 hours.

关 键 词：Cu—Fe-Cr合金 合金化 析出强化 显微硬度 电导率 

分 类 号：TG131[一般工业技术—材料科学与工程]