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基于晶粒长大的热力学机制、曲率驱动机制和能量耗散机制,制定了能够反映晶粒长大物理机制的元胞转变规则,建立了模拟LZ50钢晶粒正常长大的CA模型。采用该模型模拟了高温奥氏体化晶粒正常长大过程,分析了晶粒正常长大过程CA模拟结果的形态学、动力学和拓扑学等典型特征。模拟结果较准确的反映了晶粒正常长大规律,表明CA法是一种行之有效的模拟方法。
Based on the thermodynamics, curvature-driven mechanism and energy dissipation mechanism of grain growth, a cellular transformation rule that reflects the physical mechanism of grain growth was established and a CA model was established to simulate the normal growth of LZ50 steel grains. The model was used to simulate the normal growth of austenitized grains at high temperature. The morphological, kinetic and topological characteristics of CA simulation results were analyzed. The simulation results accurately reflect the law of normal grain growth, indicating that CA method is an effective simulation method.