Modelling of macrosegregation in large steel ingot with considering solid movement
文献类型：期刊论文
| 作者 | D. R. Liu ; B. G. Sang ; X. H. Kang ; D. Z. Li |
| 刊名 | Acta Physica Sinica
 |
| 出版日期 | 2009 |
| 卷号 | 58期号:6页码:S104-S111 |
| 关键词 | macrosegregation solid movement formation of A segregation numerical simulation globular equiaxed solidification thermosolutal convection transport phenomena grain movement predictions simulation alloys flow |
| ISSN号 | 1000-3290 |
| 中文摘要 | Based on the Eulerian and the volume averaging methods, a mathematical model of macrosegregation formation with considering solid movement during solidification of large steel ingot is developed. The cases with and without solid movement are studied and compared. The result shows that the A segregation band results from a narrow channel that forms around the position where the solidified shell in the horizontal direction meets the one in the vertical direction, which serves as a barrier to the fluid flow, leading to the accumulation of solute. Effects of critical solid fraction and density of solid on evolution of macrosegregation are investigated. The results indicate that both the positive segregation in the A segregation band and the bottom negative segregation become more pronounced with the critical solid fraction increasing. As the density of solid increases, stronger macrosegregations occur at the upper and bottom parts of the ingot. However, the length of A segregation band is not increased with density of solid. Calculated results show good agreement with experimental ones, except a larger bottom negative segregation zone. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32073]  |
| 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,B. G. Sang,X. H. Kang,et al. Modelling of macrosegregation in large steel ingot with considering solid movement[J]. Acta Physica Sinica,2009,58(6):S104-S111. |
| APA | D. R. Liu,B. G. Sang,X. H. Kang,&D. Z. Li.(2009).Modelling of macrosegregation in large steel ingot with considering solid movement.Acta Physica Sinica,58(6),S104-S111. |
| MLA | D. R. Liu,et al."Modelling of macrosegregation in large steel ingot with considering solid movement".Acta Physica Sinica 58.6(2009):S104-S111. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。