A FEM Analysis on the Influence of Manganese on Carbon and Chromium Macrosegregation in Large Size Steel Ingot

Author:

Loucif Abdelhalim1,Zhang Chun Ping1,Morin Jean Benoit2,Jahazi Mohammad1

Affiliation:

1. École de Technologie Supérieure

2. Finkl Steel Inc.

Abstract

In this study, 3D numerical simulations were performed to study the effect of Mn on the macrosegregation behaviors of carbon and chromium in a 40 MT steel ingot using Finite Element Modeling (FEM). Two Mn contents of 0 and 5 wt.% were investigated. Thermophysical properties such as specific heat, density and phase fractions were determined using thermodynamic software Thermo-Calc®. Simulation results indicated that higher Mn content increases the carbon macrosegregation while it tends to lower the one of chromium. Moreover, it changes the solute poor band into rich one in the case of chromium and no bands were obtained for carbon. These results are analyzed in terms of the changes of thermophysical properties, interactions between alloying elements and the change in the primary solidification mode from δ-ferrite to austenite resulting from the increase of Mn concentration.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference19 articles.

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2. A. Loucif, E. Ben Fredj, M. Jahazi, L-P. Lapierre-Boire, R. Tremblay and R. Beauvais: Proceeding of the 6th International Congress on the Science and Technology of Steelmaking (ICS2015), Beijing (China), (May 12-14, 2015) p.1043.

3. A. Loucif, D. Shahriari, C. Zhang, M. Jahazi, L-P. Lapierre-Boire and R. Tremblay: Mater. Sci. Forum, Vol. 879 (2017) p.1176.

4. A. Loucif, E. Ben Fredj, N. Harris, D. Shahriari, M. Jahazi and L-P. Lapierre-Boire: Metall. Mater. Trans. B, Vol. 49B (2018) p.1046.

5. J.J. Moore and N.A. Shah: Int. Met. Rev., Vol. 28, N 06 (1983) p.338.

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