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.
出处
《热加工工艺》
CSCD
北大核心
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)
