Diffusion of Carbon in the Centerline Region of Continuous Cast Slabs

Abstract:

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The paper deals with the stability of centerline inhomogenity of continuously cast slabs and hot rolled products. The centerline segregation is a disadvantageous failure of slabs which can affect the quality properties of the final products. During hot rolling of the slabs the centerline segregation pattern will become thin and stretched and it can also be detected in the middle part of heavy plates and coils. It is a common experience that the centerline segregation of heavy plates can not be easily decreased by post heat treatment. The pattern of the centerline segregation was modeled physically by preparing a sandwich structure of steel plates with different levels of carbon and alloying elements. Homogenization experiments were performed and the samples were examined metallographically. Diffusional calculations proved the governing role of carbon activity which is influenced by the distribution of alloying elements.

Info:

Periodical:

Edited by:

P. J. Szabó and T. Berecz

Pages:

441-446

DOI:

10.4028/www.scientific.net/MSF.659.441

Citation:

M. Réger et al., "Diffusion of Carbon in the Centerline Region of Continuous Cast Slabs", Materials Science Forum, Vol. 659, pp. 441-446, 2010

Online since:

September 2010

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$35.00

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