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Surface analysis of the selective oxidation during austeniticannealing of CMnSi high strength steel

Published online by Cambridge University Press:  10 April 2009

T. Van De Putte ,
J. Penning ,
S. Claessens ,
Z. Zermout  and
D. Loison
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Abstract

The selective oxidation of three CMnSi steels with differentC levels was studied by XPS. The formation of a graduallycovering SiO2 film is observed until a transition temperatureabove which the oxide film disappears, resulting in a renewedappearance of metallic iron at the surface. This change inoxidation behavior is thought to be due to the SiO2 reductionby solute C which is thermodynamically favorable at hightemperature. At the same time the precipitation of a BN filmon the metallic surface was observed which prevented anyfurther oxidation.

Type
Research Article
Information
Metallurgical Research & Technology , Volume 106 , Issue 4: EnvironmentBlast FurnaceSteelmakingGalvanizingSteel Use , April 2009 , pp. 175 - 181
Copyright
© La Revue de Métallurgie, 2009

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