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Modeling on solute enrichment and inclusion precipitation during the solidification process of high sulfur steel slab

Published online by Cambridge University Press:  11 September 2017

Lintao Gui ,
Mujun Long ,
Dengfu Chen ,
Yunwei Huang ,
Tao Liu ,
Huabiao Chen  and
Huamei Duan
Lintao Gui
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Mujun Long*
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Dengfu Chen*
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Yunwei Huang
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Tao Liu
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Huabiao Chen
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Huamei Duan
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
*
a) Address all correspondence to these authors. e-mail: [email protected]
b) e-mail: [email protected]
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Abstract

To investigate the solute transport and redistribution in the slab continuous casting processes of high sulfur steel, a three-dimensional model coupling turbulent flow, heat and solute transportation was developed. And then a thermodynamic model for MnS precipitation was established to study the MnS precipitation and distribution in strand on a macroscale and its effect on solute macrosegregation was also explored. The results showed that the temperature and solutes concentration were the main factors for the precipitation of MnS. The effect of temperature was significant when the solid fraction was greater than 0.8. Due to the precipitation of MnS, the segregation ratio of solutes Mn and S on the center line declined from 1.05–1.15 to 0.97–1.01 and from 1.2–1.45 to 1.00–1.08, respectively. And the solute concentration of Mn and S declined and distributed more uniformly in the strand, and the macrosegregation of Mn and S was also suppressed greatly.

Keywords

simulationcastingsteel
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 20 , 27 October 2017 , pp. 3854 - 3863
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Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Jürgen Eckert

References

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