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Boron effects on the solidification of steel during continuouscasting

Published online by Cambridge University Press:  09 January 2009

K.-E. Blazek ,
O. Lanzi III  and
Hongbin Yin
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Abstract

The addition of boron to steel introduces the possibility ofsteel initially completely solidifying and then remelting inthe interdendritic regions at very low carbon levels. For allcarbon levels, a low melting Fe-B alloy exists as a liquiddown to around 1100°C. This liquid is found in steel with aslow as 0.0004% boron due to the boron segregation. Thepersistence of this liquid leads to hot shortness, breakouts,and other casting defects. Pseudo-binary phase diagramsfor low boron concentrations have been developed usingThermoCalc software and were confirmed using experimentaltechniques.

Type
Research Article
Information
Metallurgical Research & Technology , Volume 105 , Issue 12: EnvironmentElectric Arc FurnaceSteelmakingContinuous CastingHot RollingSteel Use , December 2008 , pp. 609 - 625
Copyright
© La Revue de Métallurgie, 2008

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