New contribution to the thermodynamics of Fe-Cr alloys as base for ferritic steels

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Abstract

High chromium ferritic-martensitic steels are commonly used for industrial applications requiring high strength at elevated temperature. Such steels typically contain 9-14 at.% Cr and a few percents of minor alloying elements. In recent studies it has been shown that the Cr solubility limit of the standard Fe-Cr phase diagram in that composition range is significantly underestimated. For the purpose of more reliable engineering and out of physical considerations, we reparameterize the Gibbs free energy so that the correct Cr solubility at low temperature (

Details

Original languageEnglish
Pages (from-to)439-444
JournalJournal of phase equilibria and diffusion
Volume31
Issue number5
DOIs
Publication statusPublished - 6 Aug 2010

Keywords

  • Calphad approach, Fe-Cr system, phase diagram, thermodynamic modeling

ID: 277566