| 多元合金多晶粒枝晶生长的相场模型 |
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| 引用本文： | 冯力,朱昌盛,王智平,肖荣振,张殿喜.多元合金多晶粒枝晶生长的相场模型[J].兰州理工大学学报,2009,35(1). |
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| 作者姓名： | 冯力 朱昌盛 王智平 肖荣振 张殿喜 |
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| 作者单位： | 1. 兰州理工大学,材料科学与工程学院,甘肃,兰州,730050
2. 兰州理工大学,材料科学与工程学院,甘肃,兰州,730050;兰州理工大学,甘肃省有色金属及复合材料工程技术研究中心,甘肃,兰州,730050 |
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| 基金项目： | 国家自然科学基金，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 基于多元合金多晶粒生长的等温相场模型,耦合温度场,提出一个新的相场模型.利用这个模型,以Al-Cu-Mg三元合金为例模拟多元合金凝固过程中多个晶粒的枝晶生长过程.结果表明,这个模型的计算结果展现了多个晶粒枝晶的竞争生长;在模拟中可以展现合金凝固中潜热的释放;能较真实地再现凝固过程中的枝晶生长过程.
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| 关 键 词： | 相场法 多晶粒 非等温凝固 多元合金 模拟 |
Phase-field model of dendrite growth of multicomponent alloy with multiple grains |
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| FENG Li,ZHU Chang-sheng,WANG Zhi-ping,XIAO Rong-zhen,ZHANG Dian-xi.Phase-field model of dendrite growth of multicomponent alloy with multiple grains[J].Journal of Lanzhou University of Technology,2009,35(1). |
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| Authors: | FENG Li ZHU Chang-sheng WANG Zhi-ping XIAO Rong-zhen ZHANG Dian-xi |
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| Institution: | 1.College of Materials Science and Engineering;Lanzhou Univ.of Tech.;Lanzhou 730050;China;2.Research Centre of Gansu Non-ferrous Metal and Composite Materials;China |
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| Abstract: | A new phase-field model was developed based on the isothermal phase-field model of multiple grain growth of multicomponent alloy,where the temperature field was coupled.Taking Al-Cu-Mg alloy as an example,the dendrite growth process of multiple grains in multicomponent alloy was simulated.The simulation manifested the competitive growth of dendrite with multiple grains,the release of latent heat during alloy solidification,and to some extent,the virtual reproduction process of dendrite growth in course of s... |
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| Keywords: | phase-field multiple grains non-isothermal solidification multicomponent alloys simulation |
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