低温轧制对高强高导Cu-1Cr-0.2Zr-0.25Nb合金性能及析出行为的影响

李龙健, 李仁庚, 张家郡, 曹兴豪, 康慧君, 王同敏

Effects of Cryorolling on Properties and Precipitation Behavior of a High-Strength and High-Conductivity Cu-1Cr-0.2Zr-0.25Nb Alloy

LI Longjian, LI Rengeng, ZHANG Jiajun, CAO Xinghao, KANG Huijun, WANG Tongmin

表3 屈服强度计算所用的参数

Table 3 Parameters used in yield strength calculation

Parameter Symbol Unit Value Ref. Shear modulus of Cu alloy G GPa 44 [35] Taylor factor M 3.06 [36] Burgers vector modulus b nm 0.2556 [35] Poisson's ratio ν 0.33 [37] Maximum volume fraction of precipitates VCr-Max % 0.9 This work Minimum value of conductivity C0 %IACS 29.30 This work Maximum value of conductivity CMax %IACS 83.46 This work Transformation fraction of precipitation for CRⅡ-FA300 sample XCRII-FA300 % 93.26 This work Volume fraction of the precipitates for CRⅡ-FA300 sample fCRII-FA300 % 0.839 This work Mean radius of the precipitates for CRⅡ-FA300 sample rCRII-FA300 nm 6.1 This work