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Simulation of Microstructure of As-cast Steels in Continuous Casting

机译：连铸铸钢组织的模拟

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Prediction and control of steel microstructure during and after the continuous casting process is an extremely important task for steel producers making special steels with high quality demands. Continuous casting is a very complex process with series of parallel phenomena with heat and mass transfer, solidification and phase transformations. As a long-term project the authors have proceeded by developing first a two-dimensional heat transfer model, then a three-dimensional and finally, a dynamic three-dimensional heat transfer model to simulate the continuous casting process. A special solidification model was developed as well, and coupled with the heat transfer model. Models were experimentally validated and numerous industrial cases were calculated and compared with measurements. The models seemed to predict quite accurately the phase transformations and micro-structural features like dendrite arm spacing and austenite grain size, phase fractions and hardness throughout the whole as-cast strand.
机译：对于连续生产过程中和之后的钢组织的预测和控制，对于生产高质量要求特殊钢的钢铁生产商来说是极为重要的任务。连铸是一个非常复杂的过程，具有一系列平行现象，包括传热和传质，凝固和相变。作为一个长期项目，作者首先开发了二维传热模型，然后是三维模型，最后是动态三维传热模型，以模拟连续铸造过程。还开发了一种特殊的凝固模型，并与传热模型耦合。通过实验验证了模型，并计算了许多工业案例并将其与测量结果进行比较。这些模型似乎可以非常准确地预测相变和微观结构特征，例如枝晶臂间距和奥氏体晶粒尺寸，整个铸态钢中的相分数和硬度。

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