The Effect of Alloying Elements on the Stability of Centerline Segregation

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 slabs the centerline segregation pattern will become thin and stretch 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:

Defect and Diffusion Forum (Volumes 297-301)

Edited by:

Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado

Pages:

148-153

DOI:

10.4028/www.scientific.net/DDF.297-301.148

Citation:

M. Réger et al., "The Effect of Alloying Elements on the Stability of Centerline Segregation", Defect and Diffusion Forum, Vols. 297-301, pp. 148-153, 2010

Online since:

April 2010

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Price:

$35.00

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