Modeling of macrosegregation in steel ingot: influence of mold shape and melt superheat
文献类型：期刊论文
| 作者 | D. R. Liu ; X. H. Kang ; P. X. Fu ; D. Z. Li |
| 刊名 | Kovove Materialy-Metallic Materials
 |
| 出版日期 | 2011 |
| 卷号 | 49期号:2页码:143-153 |
| 关键词 | macrosegregation steel ingot mold shape melt superheat thermosolutal convection solidification |
| ISSN号 | 0023-432X |
| 中文摘要 | A continuum model for the transport phenomena in solidification systems is used to investigate the formation mechanism of macrosegregation in a 3.3 t steel ingot. Numerical scheme with explicit time stepping in solidification problems is developed for solving coupled temperature and concentration fields, and equations of momentum. Experimental measurements and numerical results in the literature are used as indications of the validity of present prediction. Influences of the mold shape and the melt superheat upon macrosegregation are investigated. Results show that for ingots with the same weight, reducing the size of hot top favors a pronounced positive-negative-positive concentration distribution along the centerline. A-segregates and positive-negative-positive concentration distribution are not found in the ingot with a modified hot top that has a more uniform section area. Higher superheat reduces the height of bottom negative segregation cone. For cases with superheat larger than zero, positively segregated patches are observed at the ingot bottom. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/30508]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | D. R. Liu,X. H. Kang,P. X. Fu,et al. Modeling of macrosegregation in steel ingot: influence of mold shape and melt superheat[J]. Kovove Materialy-Metallic Materials,2011,49(2):143-153. |
| APA | D. R. Liu,X. H. Kang,P. X. Fu,&D. Z. Li.(2011).Modeling of macrosegregation in steel ingot: influence of mold shape and melt superheat.Kovove Materialy-Metallic Materials,49(2),143-153. |
| MLA | D. R. Liu,et al."Modeling of macrosegregation in steel ingot: influence of mold shape and melt superheat".Kovove Materialy-Metallic Materials 49.2(2011):143-153. |
入库方式： OAI收割
来源：金属研究所
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