Modelling of macrosegregation in large steel ingot with considering solid movement

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	Modelling of macrosegregation in large steel ingot with considering solid movement
	D. R. Liu; B. G. Sang; X. H. Kang; D. Z. Li
	2009
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	58 期号:6 页码:S104-S111
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.
部门归属	[liu dong-rong; sang bao-guang; kang xiu-hong; li dian-zhong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [liu dong-rong] harbin univ sci & technol, sch mat sci & engn, harbin 150040, peoples r china.;liu, dr (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;hlgldr@126.com
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
URL	查看原文
WOS记录号	WOS:000270312900017
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32073
专题	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.