| 二元合金凝固过程宏观偏析的数值研究 |
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| 引用本文： | 黄庆,陈义良.二元合金凝固过程宏观偏析的数值研究[J].中国科学技术大学学报,2005,35(4):499-505. |
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| 作者姓名： | 黄庆 陈义良 |
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| 作者单位： | 中国科学技术大学热科学和能源工程系,安徽合肥,230026 |
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| 基金项目： | 国家自然科学基金（59976042）资助项目. |
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| 摘 要： | 采用凝固的混合流模型对Pb-Sn二元合金的凝固过程进行了数值研究，求解完全耦合的动量、能量和组分的输运方程，讨论了液相质量分数的求解方法，比较了不同的固相扩散模型对溶质宏观偏析的影响．数值计算结果和实验结果进行了比较分析，对模型改进做了进一步的探讨．
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| 关 键 词： | 混合流模型 宏观偏析 固相扩散 相图 |
| 文章编号： | 0253-2778（2005）04-0499-07 |
| 收稿时间： | 2004-02-08 |
| 修稿时间： | 2004年2月8日 |
Numerical Modelling of Macrosegregation During Solidification of Pb-Sn Binary Alloy |
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| HUANG Qing,Chen Yi-liang.Numerical Modelling of Macrosegregation During Solidification of Pb-Sn Binary Alloy[J].Journal of University of Science and Technology of China,2005,35(4):499-505. |
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| Authors: | HUANG Qing Chen Yi-liang |
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| Abstract: | A continuum model for simulating the solidification of Pb-Sn binary alloy is given. Different models for the diffusion in the solid are described and compared for their effects on solidification and macrosegregation. The complete coupling of momentum, energy and species equations are solved and some numerical aspects of solute liquid mass fraction are presented. The computational results are compared with the experiment. Future modifications about the model are discussed |
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| Keywords: | continuum model macrosegregation diffusion in the solid phase diagram |
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