| NUMERICAL SIMULATION OF ALLOY SOLIDIFICATION BY A TWO－PHASE MODEL |
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| 引用本文： | 倪军.NUMERICAL SIMULATION OF ALLOY SOLIDIFICATION BY A TWO－PHASE MODEL[J].金属学报,1994,30(21):385-392. |
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| 作者姓名： | 倪军 |
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| 作者单位： | Department of Mechanical Engineering，TheUniversity of Iowa，USA |
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| 摘 要： | 本文介绍了合金凝固传输过程中的二相流数学模型．该模型描述了固－液界面的传输现象和液相对流对宏观偏析的影响，并考虑了生核过程，热和溶质的过冷效应，及固相颗粒的宏观运动，从而把宏观传输过程和微观结构结合起来．采用该模型，对Ａｌ－４％Ｃｕ等轴晶合金的凝固进行了完整的数值模拟．
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| 关 键 词： | 传输过程，合金凝固，二相流数值模拟，偏析，等轴晶 |
NUMERICAL SIMULATION OF ALLOY SOLIDIFICATION BY A TWO-PHASE MODEL |
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| NI Jun,BECKERMANN Christoph.NUMERICAL SIMULATION OF ALLOY SOLIDIFICATION BY A TWO-PHASE MODEL[J].Acta Metallurgica Sinica,1994,30(21):385-392. |
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| Authors: | NI Jun BECKERMANN Christoph |
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| Affiliation: | NI Jun,BECKERMANN Christoph(Department of Mechanical Engineering,TheUniversity of Iowa,USA) |
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| Abstract: | A two-phase model of the transport phenomena during solidification of alloys is presented that describes The effect of solid transport and liquid convection on macro-segregation and grain structure evolution.The model considers nucleation, thermal and solutal undercooling, and the macro-movement of solid grains, thus combining macro-transport phenomena with the microstructure of the solid.The two-phase model was used in a numerical simulation of solidification of Al-4%Cu equiaxed alloy and representative results are presented. |
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| Keywords: | transport phenomenon solidification two-phase flow numerical simulation segregation equiaxed crystal Al-Cu alloy |
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