Numerical Simulation of Solidification Process During Vertical Continuous Casting

被引：0
|
作者：
Wang Z. [1 ]
Li B.-K. [1 ]
Liu Z.-Q. [1 ]
Niu R. [1 ]
机构：
[1] School of Metallurgy, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2020年 / 41卷 / 09期
关键词：
Columnar grain; Continuous casting; Grain sedimentation; Macrosegregation; Solidification structure;
D O I：
10.12068/j.issn.1005-3026.2020.09.007
中图分类号：
学科分类号：
摘要：
Solidification process in a vertical continuous casting was numerically simulated using a three-phase (mixed liquid-columnar-equiaxed grain) solidification model based on Eulerian-Eulerian approach and metal/alloy solidification theory. Comparing with the single-phase solidification model, more detailed phenomenons in addition to the thermo-solute natural convection are predicted, such as the evolutions of columnar and equiaxed grains, floatation/sedimentation of equiaxed grains can be predicted, which greatly affects the macroscopic solute transport and development of as-cast structure. The simulation results show that negative segregation occurs in the center of the billet, which filled with deposited equiaxed grains and next to this center, a ribbon segregation regions are observed. With the increasing superheat of molten steel, the region of equiaxed grain decreases and the macrosegregation at the center increases. © 2020, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：1257 / 1261
页数：4
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