铁素体区等温过程中Ti-Mo-Cu微合金钢中的共析出行为

唐帅, 蓝慧芳, 段磊, 金剑锋, 李建平, 刘振宇, 王国栋

Co-Precipitation Behavior in Ferrite Region During Isothermal Process in Ti-Mo-Cu Microalloyed Steel

TANG Shuai, LAN Huifang, DUAN Lei, JIN Jianfeng, LI Jianping, LIU Zhenyu, WANG Guodong

表1 计算中使用的参数[29,30,35~41]

Table 1 Parameters used in calculations[29,30,35-41]

Symbol Description Magnitude Unit Ref. aTiC Lattice constant of TiC at room temperature 0.433 nm [29] aMoC Lattice constant of MoC at room temperature 0.428 nm [35] aCu Lattice constant of ε-Cu at room temperature 0.362 nm [36] aFe Lattice constant of α-Fe at room temperature 0.287 nm αTiC Linear expansion coefficient of TiC 7.86 × 10-6 K-1 [37] αMoC Linear expansion coefficient of MoC 6.88 × 10-6 K-1 [38] αCu Linear expansion coefficient of Cu 16.5 × 10-6 K-1 [39] QTi Activation energy of Ti in α-Fe 248 kJ·mol-1 [40] QMo Activation energy of Mo in α-Fe 229 kJ·mol-1 [41] QCu Activation energy of Cu in α-Fe 284 kJ·mol-1 [41] vFe Poisson ratio of Fe 0.291 [41] vCu Poisson ratio of Cu 0.345 [41] GFe Shear modulus of Fe 89334 - 29.688T GPa [30] GCu Shear modulus of Cu 44689 - 15.936T GPa [30] k Boltzmann constant 1.38 × 10-23 J·K-1