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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 accurately simulate the evolution behavior of pipeline steel during continuous cooling, a mathematical coupling model including phase change latent heat model, temperature field model and phase change volume fraction model was established. The effects of carbon content and cooling rate The influence of latent heat of phase transformation and the influence of latent heat of phase change on the temperature distribution in cooling process. Comparing the calculated value of the coupled model with the experimental data, the agreement between them is good, and the calculation results of the coupled model are more accurate than the ordinary phase transition model. It proves that the coupled model can accurately predict the cooling process of X80 pipeline steel Organizational evolution.