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This report presents a model of solidification structures applied to continuously cast products. The aim of the work was to improve the understanding of macrosegregation mechanisms and to provide new ways to cope with this problem. The model describes the solidification kinetics, coupled with the classical heat transfer processes, related to solidification. The computation results are compared with metallographic observations made on blooms cast in 0.8% C steel. Most of the sampled blooms received a moderate electromagnetic stirring in the mould and towards the end of the liquid pool. The sampling covered a large range of casting conditions. The tundish superheat ranged from 5 to 35 C, the secondary cooling was varied from soft to very hard and the casting speed was simultaneously increased from 0.8 to 1.5 m/min. The model evaluation is based on the size of the columnar and equiaxed zones and on the average globule diameter in the bloom centre.

Additional information

Authors: ÉTIENNE A, Centre de Recherches Métallurgiques, Liège (BE);ETIENNE A, Centre de Recherches Metallurgiques, Liege (BE)
Bibliographic Reference: EUR 13372 FR (1991) 46 pp., FS, ECU 6.25
Availability: (2)
ISBN: ISBN 92-826-0535-3
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