The Effect of Alloying Elements on the Stability of Centerline Segregation

Mihály Réger; Balázs Verő; Ibolya Kardos; Péter Varga

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

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 297-301The Effect of Alloying Elements on the Stability...

The Effect of Alloying Elements on the Stability of Centerline Segregation

Abstract:

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.

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Periodical:

Defect and Diffusion Forum (Volumes 297-301)

Pages:

148-153

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.297-301.148

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Online since:

April 2010

Authors:

Mihály Réger, Balázs Verő, Ibolya Kardos, Péter Varga

Keywords:

Carbon Activity, Center-Line Segregation, Diffusional Homogenization, Effect of Manganese

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