中碳Nb合金化钢液析碳化物的析出行为

梁炫, 侯廷平, 张东, 谭昕暘, 吴开明

Precipitation Behavior of Primary Carbides in Medium Carbon Nb-Alloyed Steel

LIANG Xuan, HOU Tingping, ZHANG Dong, TAN Xinyang, WU Kaiming

表2 溶质元素的扩散常数、扩散激活能和平衡分配系数[33]

Table 2 Diffusion constants, diffusion activation energies, and equilibrium partition coefficients of solute elements[33]

Element D0δ Qδ D0γ Qγ kδ/L kγ/L C 0.0127 81370.80 0.0761 134557.44 0.19 0.340 Nb 50.2000 251960.48 0.8300 266478.96 0.40 0.220 Mn 0.7600 224429.76 0.0550 249366.40 0.76 0.780