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首页> 外文期刊>Ironmaking & Steelmaking >Numerical simulation of solidification structure during electroslag remelting casting of ZG06Cr13Ni4Mo ingot based on CAFE and moving boundary method
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Numerical simulation of solidification structure during electroslag remelting casting of ZG06Cr13Ni4Mo ingot based on CAFE and moving boundary method

机译：基于CAFE和移动边界法的ZG06Cr13Ni4Mo铸锭电渣重熔铸造凝固组织数值模拟。

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摘要

A comprehensive mathematical model of the solidification structure during the process of electroslag remelting casting (ESRC) of low carbon martensite stainless steel ZG06Cr13Ni4Mo has been established. The change of metal pool profile and grain growth and the microstructure evolution process from the beginning to the steady stage of the ESRC process were investigated by using the moving boundary method and the coupled technology CAFE method (cellular automaton - finite element method). The transition from equiaxed grains at the lateral wall of the mould to columnar grains has been revealed. In addition, casting of this steel has been carried out and the microstructure of the ingot obtained after grinding and acid leaching. According to the comparison of the metal pool profile, morphology and growth direction of the dendrite and the secondary dendrite arm spacing (SDAS) between the experimental results and the simulation results, the validity of the model has been demonstrated, which can provide a favourable theoretical foundation to optimise the process parameters for the control of solidification structure of ESRC of low carbon martensite stainless steel ZG06Cr13Ni4Mo.
机译：建立了低碳马氏体不锈钢ZG06Cr13Ni4Mo电渣重熔铸造过程中凝固组织的综合数学模型。利用移动边界法和耦合技术CAFE法（细胞自动机-有限元法）研究了ESRC过程从开始到稳定阶段的金属熔池轮廓和晶粒长大的变化以及微观结构的演变过程。揭示了从模具侧壁等轴晶粒向柱状晶粒的过渡。另外，已经进行了这种钢的铸造，并且在研磨和酸浸之后获得了铸锭的显微组织。通过对实验结果与模拟结果的比较，比较了枝晶的金属熔池轮廓，枝晶的形貌和生长方向以及二次枝晶臂间距（SDAS），证明了该模型的有效性，可以提供良好的理论依据。为优化低碳马氏体不锈钢ZG06Cr13Ni4Mo的ESRC凝固组织控制工艺参数奠定了基础。

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