Paper Title:
Effect of Si on High-Temperature Oxidation of Steel during Hot Rolling
  Abstract

An oxide scale layer always forms at the strip surface during the hot rolling process. As a consequence, de-scaling and pickling operations must be performed prior or after hot rolling. Many surface defects caused by hot rolling are related to oxidation in the reheating furnace. One of these is the melting of eutectic FeO/Fe2SiO4 during reheating over 1170°C giving as a result red scale defects in Si-added steel. On the other hand, steel strip surface oxidation during hot rolling causes an industrial and environmental problem: secondary oxide is removed after roughing, but tertiary oxide scales already start to form before entering the finishing stands. Their properties affect the final steel surface quality and its response to further processing. Furthermore, the addition of alloying elements has an important impact on scale properties. In particular the alloying of silicon effects the region between scale and substrate. It causes peculiar surface properties inherited from its specific oxidation characteristics. Conventional oxidation experiments in air of silicon steels are a valuable tool to study the influence of Si on steel oxidation. After oxidation in air in the temperature range of 900-1250°C it has been observed that Si enhance markedly scale adhesion, especially above 1177°C (the eutectic temperature of FeO-Fe2SiO4 ) and also at lower temperatures. Special attention has been paid on the investigation of the effects of alloying Si on the high-temperature oxidation of steel, for a better understanding of the behaviour of modern steels during hot rolling.

  Info
Periodical
Defect and Diffusion Forum (Volumes 273-276)
Edited by
Andreas Öchsner and Graeme E. Murch
Pages
655-660
DOI
10.4028/www.scientific.net/DDF.273-276.655
Citation
L. Suarez, J. Schneider, Y. Houbaert, "Effect of Si on High-Temperature Oxidation of Steel during Hot Rolling", Defect and Diffusion Forum, Vols. 273-276, pp. 655-660, 2008
Online since
February 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Christophe Issartel, Henri Buscail, Eric Caudron, Régis Cueff, Frédéric Riffard, S. El Messki, N. Karimi, Laurent Antoni
69
Authors: P. Bruckel, P. Lamesle, Philippe Lours, Bernard Pieraggi
831
Authors: Rabindra Mahapatra, A.W. Davis
Abstract:In this paper we report the oxidation behavior of Rh-xTi (x = 15 & 20 atomic percent) alloys isothermally exposed in air between 1000 and...
721
Authors: Eric Caudron, Régis Cueff, Christophe Issartel, N. Karimi, Frédéric Riffard, Sébastien Perrier, Henri Buscail
Abstract:Manganese addition and subsequent yttrium implantation effects on extra low carbon steel were studied by Rutherford Backscattering...
897
Authors: F. Riffard, Henri Buscail, F. Rabaste, Christophe Issartel, Sébastien Perrier
Chapter 6: Diffusion and Corrosion Processes
Abstract:Phosphoric acid treatment is used as a way to improve the high temperature oxidation resistance of a chromia-forming AISI 304 steel....
359