Numerical simulation of macrosegregation in large multiconcentration poured steel ingot
文献类型：期刊论文
| 作者 | D. R. Liu ; B. G. Sang ; X. H. Kang ; D. Z. Li |
| 刊名 | International Journal of Cast Metals Research
 |
| 出版日期 | 2010 |
| 卷号 | 23期号:6页码:354-363 |
| 关键词 | Macrosegregation Multiconcentration pouring Steel ingot casting Numerical simulation solidification models macro segregation grain structures prevention convection alloys scheme |
| ISSN号 | 1364-0461 |
| 中文摘要 | A continuum model for the transport phenomena in solidification systems is used to investigate the formation of macrosegregation in a 360 t multiconcentration poured steel ingot. A numerical scheme with explicit time stepping in solidification problems is employed to solve coupled temperature and concentration fields, and equations of momentum. The proposed scheme is tested against an experimental concentration field reported in the literature. The influences of the concentration in each ladle and the ladle pouring time upon macrosegregation are studied. The simulation results show that, with a shorter time for the last ladle, macrosegregation is not significantly reduced with MCP compared with conventional single concentration pouring. A longer ladle time produced a marked reduction in the extent of positive segregation at the top of the ingot. Any positive segregation in excess of the industrial requirement limit is shifted to the riser. If the last ladle is poured after a longer time, growth of channel segregates is initiated by local remelting. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31272]  |
| 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. Numerical simulation of macrosegregation in large multiconcentration poured steel ingot[J]. International Journal of Cast Metals Research,2010,23(6):354-363. |
| APA | D. R. Liu,B. G. Sang,X. H. Kang,&D. Z. Li.(2010).Numerical simulation of macrosegregation in large multiconcentration poured steel ingot.International Journal of Cast Metals Research,23(6),354-363. |
| MLA | D. R. Liu,et al."Numerical simulation of macrosegregation in large multiconcentration poured steel ingot".International Journal of Cast Metals Research 23.6(2010):354-363. |
入库方式： OAI收割
来源：金属研究所
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