| 相场模型参数对枝晶形貌的影响 |
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| 引用本文： | 赵代平,荆涛,柳百成. 相场模型参数对枝晶形貌的影响[J]. 金属学报, 2003, 39(8): 813-816 |
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| 作者姓名： | 赵代平 荆涛 柳百成 |
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| 作者单位： | 清华大学机械工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目 50005011 |
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| 摘 要： | 定量研究了相场模型中过冷度、温度对相场的耦合系数、各向异性系数等参数对晶粒形貌的影响，讨论了不同枝晶形貌和海藻状形貌的产生和转化，研究了生长速度与晶粒形貌及相场参数的联系，分析了枝晶生长尖端的分叉及边枝的产生原理。
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| 关 键 词： | 相场 枝晶 边枝 微观组织模拟 |
| 文章编号： | 0412-1961(2003)08-0813-04 |
| 修稿时间： | 2002-10-26 |
INFLUENCE OF PHASE-FIELD PARAMETERS ON THE DENDRITE MORPHOLOGY |
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| ZHAO Daiping,JING Tao,LIU Baicheng. INFLUENCE OF PHASE-FIELD PARAMETERS ON THE DENDRITE MORPHOLOGY[J]. Acta Metallurgica Sinica, 2003, 39(8): 813-816 |
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| Authors: | ZHAO Daiping JING Tao LIU Baicheng |
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| Affiliation: | ZHAO Daiping,JING Tao,LIU BaichengDepartment of Mechanical Engineering,Tsinghua University,Beijing 100084 |
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| Abstract: | The connection between the grain morphologies and some parameters in phase-field model has been studied, which include undercooling, the coupling coefficient between the temperature field and the phase field, the anisotropic coefficient and so on. The formation and transformation between the dendrite morphology and seaweed morphology are discussed. Besides, the relations between the tip growth speed and the grain morphologies, the parameters are studied, the theory of the dendrite tip branching-off and the theory of side-branching are analyzed. |
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| Keywords: | phase-field dendrite side branche microstructure modeling |
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