| 用于铸坯凝固的简易微观偏析模型 |
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| 引用本文： | 景财良,田志红,王新华.用于铸坯凝固的简易微观偏析模型[J].钢铁研究学报,2013,25(6):18-23. |
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| 作者姓名： | 景财良 田志红 王新华 |
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| 作者单位： | 1. 首钢京唐钢铁联合有限责任公司,河北唐山,063200
2. 北京科技大学冶金与生态工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划资助项目 |
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| 摘 要： | 针对目前微观偏析模型形式复杂、求解困难等问题,在比较了目前几个主要的微观偏析模型的计算结果后,基于Scheil模型的方程形式和CK模型在1℃/s冷却速率下的变化趋势,建立了适合连铸坯凝固的简易微观偏析模型.研究表明,该模型可快速并准确预测枝晶间液相浓度与钢的零强度温度(ZST),并可对连铸坯各元素间宏观偏析的关系进行定量判断,大幅度降低了使用难度.
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| 关 键 词： | 微观偏析 简易模型 枝晶间液相浓度 零强度温度 |
A Simple Micro-Segregation Model for Steel Billet |
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| JING Cai-liang,TIAN Zhi-hong,WANG Xin-hua.A Simple Micro-Segregation Model for Steel Billet[J].Journal of Iron and Steel Research,2013,25(6):18-23. |
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| Authors: | JING Cai-liang TIAN Zhi-hong WANG Xin-hua |
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| Affiliation: | 1. Shougang Jingtang Iron and Steel Co., Ltd., Tangshan 063200, Hebei, China ;2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Aiming at the problems that the current micro-segregation models are complex and difficult to be solved, the main current micro-segregation models were compared and discussed, and then a simple model was established based on the equation form of Scheil model and the trends of CK model under the cooling rate 1??/s. It is shown that the interdendritic liquid concentration, ZST of steel and the relationships of macro-segregation between different elements in billet could be quickly and accurately predicted by this model which is much easier to be understood and solved. |
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| Keywords: | micro-segregation simple model interdendritic liquid concentration zero strength temperature (ZST) |
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