Numerical simulation of deformation-induced segregation in continuous casting of steel View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2001-06

AUTHORS

T. Kajatani, J. -M. Drezet, M. Rappaz

ABSTRACT

The deformation-induced macrosegregation in continuous casting of steel has been simulated using a finite-volume scheme. For that purpose, a two-dimensional heat-flow computation was first performed in a Eulerian reference frame attached to the mold, assuming a unique solidification path, i.e., a unique relationship between temperature and enthalpy. This gave the stationary enthalpy field in the longitudinal section of the slab. On the other hand, bulging of the slab between two rolls was calculated in the same section, assuming plane-strain deformation and using the ABAQUS code. The Lagrangian reference frame was attached to the slab, and the rolls were moved at the surface until a stationary, bulging deformation profile was reached. The bulging of the surface was then used as an input condition for the calculation of the velocity and pressure fields in the interdendritic liquid. Using a fairly simple hypothesis for the deformation of the solid skeleton, the mass conservation and Darcy equations were solved in a Eulerian reference frame. This calculation was performed in an iterative loop, within which the solute conservation equation was also solved. At convergence and using the enthalpy field, this calculation allowed to obtain the temperature, the volume fraction of solid, and the average concentration fields, in addition to the fluid velocity and pressure. It is shown that the positive centerline segregation of carbon in the slab is well reproduced with this model. The effects of shrinkage and soft reduction were also investigated. More... »

PAGES

1479-1491

References to SciGraph publications

  • 1995-09. Modeling of inverse segregation and porosity formation in directionally solidified aluminum alloys in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1995-08. Coupled turbulent flow, heat, and solute transport in continuous casting processes in METALLURGICAL AND MATERIALS TRANSACTIONS B
  • 1992-03. Simple constitutive equations for steel at high temperature in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1998-02. Numerical simulation of macrosegregation: a comparison between finite volume method and finite element method predictions and a confrontation with experiments in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 2000-05. Two-phase modeling of mushy zone parameters associated with hot tearing in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1990-02. Conservation of mass and momentum for the flow of interdendritic liquid during solidification in METALLURGICAL AND MATERIALS TRANSACTIONS B
  • 1996-09. Equiaxed dendritic solidification with convection: Part I. Multiscale/multiphase modeling in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1985-09. Inverse segregation in METALLURGICAL AND MATERIALS TRANSACTIONS B
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s11661-001-0236-1

    DOI

    http://dx.doi.org/10.1007/s11661-001-0236-1

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1003314138


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