ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Design Methods for Solidification Structures in Micro Continuous Casting
Nobuaki ItoKoichi Anzai
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2010 Volume 50 Issue 12 Pages 1819-1828

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Abstract

Micro continuous casting, which includes, for example, single-roll casting, twin-roll casting, and EFG, is a comprehensive casting method concept for high-performance material produced with rapid solidification. When a new material functionalized through micro continuous casting is industrially developed, the caster type generally differs between design (experimental) phases because of the discrepancy of the purpose in each design phase. In the present design method, experimental data is arranged as ‘solidification structure map’ with local field properties, solidification rates, and temperature gradients, as the dominant general parameters is assisted with the casting simulation of temperature and flow field without microstructure prediction. The present method could reduce the design steps necessary for conventional design, in which the fully empirical method has been adopted, because no solidification microstructure model can determine the structure for industrial accuracy for untested material composition or casting conditions.
The present design method requires high accuracy for solidification models because the shape of the ‘solidification structure map’ changes significantly by the model accuracy in a casting simulation.

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© 2010 by The Iron and Steel Institute of Japan
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