| Fe-0.6%C合金凝固过程枝晶生长数值模拟 |
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| 引用本文： | 郭大勇,杨院生,童文辉,胡壮麒.Fe-0.6%C合金凝固过程枝晶生长数值模拟[J].铸造技术,2006,27(1):67-70. |
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| 作者姓名： | 郭大勇 杨院生 童文辉 胡壮麒 |
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| 作者单位： | 1. 鞍钢技术中心,辽宁,鞍山,114001;中科院金属研究所,辽宁,沈阳,110001
2. 中科院金属研究所,辽宁,沈阳,110001 |
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| 摘 要： | 采用元胞自动机方法,结合合金凝固过程中的动量、能量和质量传输,建立了计算枝晶形貌与偏析发展的数学模型。把该数学模型应用到Fe-0.6%C合金凝固过程,枝晶臂的生长、粗化和柱状晶向等轴晶转变过程得到了再现。同时该数学模型也描述了凝固过程熔体流动对Fe-0.6%C枝晶形貌发展的影响。
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| 关 键 词： | 元胞自动机 枝晶形貌 数学模型 凝固 |
| 文章编号： | 1000-8365(2006)01-0067-04 |
| 收稿时间： | 08 30 2005 12:00AM |
| 修稿时间： | 11 15 2005 12:00AM |
Numerical Simulation for Dendrite Development during Fe-0.6%C Alloy Solidification |
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| GUO Da-yong,YANG Yuan-sheng,TONG Wen-hui,HU Zhuang-qi.Numerical Simulation for Dendrite Development during Fe-0.6%C Alloy Solidification[J].Foundry Technology,2006,27(1):67-70. |
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| Authors: | GUO Da-yong YANG Yuan-sheng TONG Wen-hui HU Zhuang-qi |
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| Affiliation: | 1. Angang Technology Center, Anshan 114001, China; 2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110001, China |
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| Abstract: | A Cellular Automata(CA) method coupled with transient calculations for the distributions of temperature,solute and velocity during the solidification of alloy is established.The model can directly describe the evolution of both morphology and segregation during dendritic crystal growth.Calculations are performed to simulate the dendrite evolution during the solidification of Fe-0.6wt%C alloy.Dendrite development and coarsening are observed,as well as the columnar-to-equiaxed transition.The effect of melt flow on the morphological development during Fe-0.6wt%C alloy solidification is also studied. |
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| Keywords: | Cellular automata Dendrite morphology Numerical model Solidification |
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