| 高碳钢连铸坯凝固过程溶质宏观偏析的数值模型 |
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| 引用本文： | 张红伟,王恩刚,等.高碳钢连铸坯凝固过程溶质宏观偏析的数值模型[J].东北大学学报(自然科学版),2002,23(6):549-552. |
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| 作者姓名： | 张红伟 王恩刚 |
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| 作者单位： | 东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004 |
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| 基金项目： | 国家重点基础研究发展规划项目 (G19980 615 10 ) |
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| 摘 要： | 采用FeC二元合金的紊流、凝固传热及溶质传输三维耦合模型,针对铸坯不同碳质量分数对凝固过程溶质分布的影响进行数值模拟,凝固过程以柱状晶生长方式进行,遵循局部热力学平衡·研究发现,与低碳钢相比,高碳钢的凝固坯壳较薄,等温曲线较为光滑,糊状区范围较大·碳质量分数较高的钢种,偏析较轻;而低碳钢,偏析较为严重
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| 关 键 词： | 高碳钢 连铸坯 凝固 宏观偏析 数值模拟 |
Numerical Simulation on Solute Macrosegregation During Solidification in High Carbon Continuous Casting Billet |
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| ZHANG Hong wei,WANG En gang,HE Ji cheng.Numerical Simulation on Solute Macrosegregation During Solidification in High Carbon Continuous Casting Billet[J].Journal of Northeastern University(Natural Science),2002,23(6):549-552. |
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| Authors: | ZHANG Hong wei WANG En gang HE Ji cheng |
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| Abstract: | The influence of carbon content on its distribution during continuous casting solidification has been studied using a 3D model coupling turbulent flow,solidification and solute transport under local thermodynamic equilibrium condition with the assumption of a columnar dendritic microstructure. The calculated results show that the high carbon steel has thinner solidified shell, smoother temperature contour line and larger mushy region compared to those of a low carbon steel. Also,the high carbon steel has less carbon macrosegregation than that of the low carbon steel which has a smaller carbon equilibrium partition ratio between solid phase and the liquid phase. |
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| Keywords: | high carbon continuous casting billet solidification macrosegregation numerical simulation |
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