| 薄带铸轧过程中微观偏析的模拟 |
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| 引用本文： | 张晓明,苗雨川,刘相华,王国栋. 薄带铸轧过程中微观偏析的模拟[J]. 东北大学学报(自然科学版), 2001, 22(2): 162-164 |
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| 作者姓名： | 张晓明 苗雨川 刘相华 王国栋 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室, 辽宁沈阳 110004;东北大学轧制技术及连轧自动化国家重点实验室, 辽宁沈阳 110004;东北大学轧制技术及连轧自动化国家重点实验室, 辽宁沈阳 110004;东北大学轧制技术及连轧自动化国家重点实验室, 辽宁沈阳 110004 |
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| 基金项目： | 国家自然科学基金资助项目! (5 9995 440 ) |
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| 摘 要： | 针对薄带铸轧过程冷却速率大的特点,采用微观偏析模型对碳钢在薄带铸轧过程中溶质元素的微观偏析进行了模拟,通过模拟给出了铸轧凝固过程中固相率随温度的变化规律,固相率仅在很窄的温度范围内迅速增加·同时给出了冷却速率对溶质元素偏析的影响规律,随冷却速率的增加,溶质元素晶间偏析增大,而晶内偏析较小·在此基础上给出了碳钢薄带双辊铸轧过程中凝固终了温度值,为确定铸带凝固终了点的位置及铸轧过程的稳定性提供了有效的数据,为铸轧薄带的质量分析提供了理论依据·
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| 关 键 词： | 薄带铸轧 快速凝固 微观偏析 模拟 |
| 文章编号： | 1005-3026(2001)02-0162-03 |
| 修稿时间： | 2000-07-10 |
Simulation on the Microsegregation During Strip Casting Process |
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| ZHANG Xiao ming,MIAO Yu chuan,LIU Xiang hua,WANG Guo dong. Simulation on the Microsegregation During Strip Casting Process[J]. Journal of Northeastern University(Natural Science), 2001, 22(2): 162-164 |
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| Authors: | ZHANG Xiao ming MIAO Yu chuan LIU Xiang hua WANG Guo dong |
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| Abstract: | The microsegregation of the solute in steel strip during the strip casting process was investigated by numerical modelling. The relationship between solid fraction and temperature was given. The solid fraction increases quickly in a very small temperature range. With the increasing of cooling rate, the segregation between dendrite becomes large whereas the segregation with in the dendrite becomes small. Based on the computation results, the completed solidification temperature distribution in the twin roll casting strip was obtained. The results provide a theoretical foundation for dealing with the problems of casting process controlling and quality analysis. |
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| Keywords: | strip casting rapid solidification microsegregation simulation |
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