Numerical Simulation of Macrosegregation for an Fe-0.8 wt pct C Alloy

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	Numerical Simulation of Macrosegregation for an Fe-0.8 wt pct C Alloy
	D. R. Liu; D. Z. Li; B. G. Sang
	2009
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	25 期号:4 页码:561-568
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.
部门归属	[liu, dongrong; li, dianzhong; sang, baoguang] chinese acad sci, inst met res, shenyang 110016, peoples r china. [liu, dongrong] harbin univ sci & technol, sch mat sci & engn, harbin 150040, peoples r china.;liu, dr (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;hlgldr@126.com
关键词	Macrosegregation Channel Segregation Thermosolutal Convection Fe-c Alloy Globular Equiaxed Solidification Convection Steel Model
URL	查看原文
WOS记录号	WOS:000268775200028
引用统计	被引频次：6[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/321006/32072
专题	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.