摘要
为能够精确模拟管线钢连续冷却过程中组织演变行为,建立了一种包括相变潜热模型、温度场模型和相变体积分数模型在内的数学耦合模型,深入研究了含碳量和冷却速度对相变潜热的影响,以及相变潜热对冷却过程中温度分布的影响。将耦合模型的计算值与实验数据进行对比,两者吻合较好,且耦合模型的计算结果与普通相变模型计算结果相比更加精确,证明了该耦合模型能够准确预测X80管线钢冷却过程中的组织演变。
In order to exactly simulate the microstructure evolution of pipeline steels during the cooling process, a mathematical coupled model was established, which included the latent heat model, the temperature field model and the transformation volume fraction model. The influence of carbon content and cooling rate on the latent heat as well as the effect of latent heat on the temperature field during the cooling process was thoroughly investigated. The results given by the coupled model were not only in good agreements with the experimental results, but also more accurate than the normal phase transition model, which showed that the coupled model could accurately predict the phase transformation of pipeline steels during the cooling process.
出处
《冶金设备》
2012年第5期11-15,共5页
Metallurgical Equipment
关键词
管线钢
连续冷却
相变
潜热
温度分布
耦合模型
Pipeline steel Continuous cooling Transformation Latent heat Temperature distribution Coupled model
