| 超轻镁合金板坯直冷连铸三维温度场数值模拟 |
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| 引用本文： | 史淑艳,郝 海,张兴国,房灿峰,姚 山,金俊泽.超轻镁合金板坯直冷连铸三维温度场数值模拟[J].稀有金属材料与工程,2009,38(2):203-208. |
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| 作者姓名： | 史淑艳 郝 海 张兴国 房灿峰 姚 山 金俊泽 |
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| 作者单位： | 大连理工大学三束材料改性国家重点实验室,辽宁大连,116024 |
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| 基金项目： | Supported by the Key Grant of Science & Technology by the Ministry of Education of China (107031) |
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| 摘 要： | 运用有限差分法,对超轻Mg-Li合金(LA141)板坯直冷连铸过程温度场进行数值模拟,根据实际过程的物理现象以及文献资料确定包括一冷区、二冷区在内的边界条件,并且考虑底模与铸坯之间随着铸坯的变形而引起的换热系数的变化.通过计算铸坯内温度场的分布,固-液界面的形状和位置,分析各种铸造参数,包括浇注温度、冷却水量、铸造速度等对连铸过程的影响.另外也比较了在同等铸造条件下LA141铸坯和AZ31铸坯铸造过程中凝固前沿的形状.
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| 关 键 词： | 超轻镁合金 直冷连铸 板坯 温度场 数学模型 |
| 收稿时间： | 2008/1/27 0:00:00 |
A 3-D Mathematical Model of Thermal Field Evolution in the Direct Chill Casting of Superlight Magnesium Alloy Slabs |
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| Shi Shuyan,Hao Hai,Zhang Xingguo,Fang Canfeng,Yao Shan and Jin Junze.A 3-D Mathematical Model of Thermal Field Evolution in the Direct Chill Casting of Superlight Magnesium Alloy Slabs[J].Rare Metal Materials and Engineering,2009,38(2):203-208. |
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| Authors: | Shi Shuyan Hao Hai Zhang Xingguo Fang Canfeng Yao Shan and Jin Junze |
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| Affiliation: | State key Laboratory of Materials Surface Modification by Laser, Ion and Electronic Beams, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | A mathematical model of the direct chill (DC) casting process for superlight Mg-Li alloy (LA141) slab has been developed using the finite differential method (FDM). Thermal boundary conditions including primary and secondary cooling conditions, have been selected based on knowledges of the physical process and the literatures. The variations of heat transfer coefficient between slab and dummy block interface resulting from the deformation of the slab have been considered. By calculating the temperature dist... |
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| Keywords: | superlight magnesium alloys direct chill casting slabs temperature field mathematical model |
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