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Precipitation of nitrides and carbides during solidification and cooling in continuous casting

Published online by Cambridge University Press:  22 February 2006

V. Ludlow ,
K.-G. Bain ,
S. Riaz ,
K. Muller ,
J. Wans ,
G. Alvarez de Toledo ,
S. Zajac  and
D. Senk
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Abstract

As cast CC slabs of microalloyed steels are prone to surface cracking. Precipitation phenomena, initiated during solidification, reduce ductility at high temperature. The size, morphology and distribution of precipitates in as cast semis depend on solidification rate, on secondary cooling, straightening and cooling off the caster. Microsegregation of the microalloying additions to the interdendritic boundaries during solidification increases precipitation temperature. Results are presented concerning the effect of solidification and cooling on precipitates characteristics in semis. The characterization of precipitates is quite satisfactory although it could not be clearly correlated with surface quality.


Type
Research Article
Information
Metallurgical Research & Technology , Volume 103 , Issue 1: Compte rendu des Journées Sidérurgiques Internationales 2005 de l'ATSCoulée continueAciers inoxydables , January 2006 , pp. 17 - 24
Copyright
© La Revue de Métallurgie, 2006

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