摘要
基于Cahn相变理论、Zener理论和Sellars & Beynon模型,探索了高强度船板钢在连续冷却过程中铁素体晶粒尺寸的变化规律。在模型中引入原位γ晶粒尺寸和冷却速度的作用,得到了高强度船板钢在连续冷却过程中铁素体晶粒尺寸的预测方法。结果表明:原位γ晶粒尺寸d_r、冷却速率C_R与相变后α晶粒尺寸d_α~0之间关系为d_α~0=-7.5+4.3C_R^(-0.5)+70.8×[1-exp(-0.015d_r)]。
Based on the Cahn phase transformation theory, Zener theory and Sellars ＆ Beynon model, the ferrite grain size change rule of the high strength ship plate steel in continuous cooling process was explored. The effects of original austenite grain size and cooling rate were introduced into the model to predict the ferrite grain size of the high strength ship plate steel in continuous cooling process. The experiment results showed that the relationship among original austenite grain size dr, cooling rate Cn and ferrite grain size dα^0 after phase transformation was described as dα^0 = -7.5 ＋4.3CR^-0.5 ＋70.8 × [ 1 - exp（-0.015dr） ].
出处
《上海金属》
CAS
北大核心
2013年第2期32-35,40,共5页
Shanghai Metals
关键词
微合金钢
连续冷却过程
γ-α相变
Micro Alloyed Steel,Continuous Cooling Process,γ -α Phase Transformation
