Cu-0.38Cr-0.12Zr合金等温时效动力学研究  

Study on Isothermal Aging Kinetics of Cu-0.38Cr-0.12Zr Alloy

作　　者：赵英杰[1,2] 宋渊明[2] 

机构地区：[1]重庆三峡学院机械工程学院,重庆400100 [2]重庆三峡学院现代机械结构材料工程技术中心,重庆400100

出　　处：《热加工工艺》2017年第14期190-193,196,共5页Hot Working Technology

基　　金：重庆市自然科学基金项目(2015A030313207)

摘　　要：通过直接测定电阻率研究了Cu-0.38Cr-0.12Zr合金等温时效过程,其相对电阻率γ的变化量Δγ符合Avrami经验方程转化关系。合金经360℃时效90 min后,组织由α-Cu基体和Cu_5Zr相组成。随着时效时间的延长,Cu_5Zr相逐渐粗化,由面心立方结构转变为体心立方结构的Cu_4Zr相,并出现单质Cr相。经TEM分析确定Cr相形状为彼此相互连接的多个类似菱形的相,并存在周期性。The isothermal aging process of Cu-0.38Cr-0.12Zr alloy was studied by direct measurement of resistivity. The change of relative resistivity of Ay is in accordance with Avrami empirical equation transformation relation; after aging at 360 ℃ for 90 min, the microstructure of the alloy is composed of α-Cu matrix and Cu_5Zr phase. With the extension of aging time, the Cu_5Zr phase gradually coarsens, the face-centred cubic structure transforms into the body centered cubic structure of the Cu_4Zr phase, and a single Cr phase appears. The Cr phase form determined by TEM analysis is a plurality of diamond phases connected to each other, and has periodicity.

关 键 词：CU-CR合金 时效 动力学 电阻率 

分 类 号：TG146.2[一般工业技术—材料科学与工程]