Numerical Simulation of Macrosegregation for an Fe-0.8 wt pct C Alloy
文献类型：期刊论文
| 作者 | D. R. Liu ; D. Z. Li ; B. G. Sang |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2009 |
| 卷号 | 25期号:4页码:561-568 |
| 关键词 | Macrosegregation Channel segregation Thermosolutal convection Fe-C alloy globular equiaxed solidification convection steel model |
| ISSN号 | 1005-0302 |
| 中文摘要 | Macrosegregation in Fe-0.8 wt pct C alloy solidifying with equiaxed morphology was numerically simulated. Based on a two-phase volumetric averaging approach, heat transfer, melt convection, composition distribution, nucleation and grain evolution on the system scale were described. A weak-coupling numerical procedure was designed to solve conservation equations. Simulations were conducted to study the effects of cooling rate and nuclei density on the macrosegregation pattern. The relative influence of thermal buoyancy- and solutal buoyancy-induced flows on macrosegregation was identified. Calculated results indicate that a higher cooling rate establishes a more homogeneous composition. More uniform solute distributions are formed with increasing nuclei density. In addition, it is noted that the direction of channel segregates depends on the relative strength of thermal and solutal buoyancy forces. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32072]  |
| 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,D. Z. Li,B. G. Sang. Numerical Simulation of Macrosegregation for an Fe-0.8 wt pct C Alloy[J]. Journal of Materials Science & Technology,2009,25(4):561-568. |
| APA | D. R. Liu,D. Z. Li,&B. G. Sang.(2009).Numerical Simulation of Macrosegregation for an Fe-0.8 wt pct C Alloy.Journal of Materials Science & Technology,25(4),561-568. |
| MLA | D. R. Liu,et al."Numerical Simulation of Macrosegregation for an Fe-0.8 wt pct C Alloy".Journal of Materials Science & Technology 25.4(2009):561-568. |
入库方式： OAI收割
来源：金属研究所
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