Coupled Influence of Convection and Grain-refining on Macrosegregation of 1D Upwardly Solidified Al 4.5%Cu

  1. Dipl.-Ing. K. Ehrke Chairman3 and
  2. Prof. Dr. W. Schneider4
  1. Ph. Jarry1,
  2. H. Combeau2 and
  3. G. Lesoult2

Published Online: 21 APR 2006

DOI: 10.1002/3527607331.ch34

Continuous Casting

Continuous Casting

How to Cite

Jarry, Ph., Combeau, H. and Lesoult, G. (2000) Coupled Influence of Convection and Grain-refining on Macrosegregation of 1D Upwardly Solidified Al 4.5%Cu, in Continuous Casting (eds K. Ehrke and W. Schneider), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607331.ch34

Editor Information

  1. 3

    ALUMINIUM Essen GmbH, Sulterkamp 71, D-45356 Essen, Germany

  2. 4

    VAW Aluminium AG, Forschung und Entwicklung, Georg-von-Boeselager-Str. 25, D-53117 Bonn, Germany

Author Information

  1. 1

    Pechiney Centre de Recherches de Voreppe, France

  2. 2

    LSG2M, Ecole des Mines de Nancy, France

Publication History

  1. Published Online: 21 APR 2006
  2. Published Print: 29 NOV 2000

ISBN Information

Print ISBN: 9783527302833

Online ISBN: 9783527607334

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Keywords:

  • continuous casting;
  • macrosegregation;
  • influence of convection and grain-refining

Summary

It has been shown in previous studies that even in the simple configuration of a 1D upward solidification set-up, inverse macro-segregation is influenced by convective phenomena. In order to better identify the respective contributions of dendrite settling, dendrite transport and thermo-solutal convection to inverse segregation in the vicinity of the chill, a comparison has been made between Al4,5%Cu ingots obtained with or without grain refinement, and solidified in a 1D upward solidification set-up either located in the laboratory at room temperature, or within a heated oven in order to inhibit convection. The macrosegregation results evidence the combined effects on the macro-segregation pattern, of dendrite mobility, as governed by the grain refinement and Ti concentration, and of convective behavior, as induced by the temperature around the mold.