Thermodynamic calculations of phase equilibria in the Fe-Cr-S system

Katsunari Oikawa; Hajime Mitsui; Hiroshi Ohtani; Kiyohito Ishida

doi:10.2355/isijinternational.40.182

Thermodynamic calculations of phase equilibria in the Fe-Cr-S system

Katsunari Oikawa, Hajime Mitsui, Hiroshi Ohtani, Kiyohito Ishida

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Phase equilibria in the Fe-Cr-S system were analyzed on the basis of the thermodynamic evaluation of the Fe-FeS, Fe-Cr, Cr-CrS and Fe-FeS-CrS-Cr systems. The Gibbs energy of individual phase was approximated by the two sub-lattice model for describing the thermodynamic properties. Most of the experimental information was well described by the present set of thermodynamic parameters. In particular, the calculated liquidus surface in the Fe-rich portion and the solubilities of S in the fcc and the bcc phases were shown to be in excellent agreement with experimental results. Discrepancies observed in some experimental phase diagrams were explained on the basis of the calculated results.

Original language	English
Pages (from-to)	182-190
Number of pages	9
Journal	Isij International
Volume	40
Issue number	2
DOIs	https://doi.org/10.2355/isijinternational.40.182
Publication status	Published - 2000

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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AU - Oikawa, Katsunari

AU - Mitsui, Hajime

AU - Ohtani, Hiroshi

AU - Ishida, Kiyohito

PY - 2000

Y1 - 2000

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AB - Phase equilibria in the Fe-Cr-S system were analyzed on the basis of the thermodynamic evaluation of the Fe-FeS, Fe-Cr, Cr-CrS and Fe-FeS-CrS-Cr systems. The Gibbs energy of individual phase was approximated by the two sub-lattice model for describing the thermodynamic properties. Most of the experimental information was well described by the present set of thermodynamic parameters. In particular, the calculated liquidus surface in the Fe-rich portion and the solubilities of S in the fcc and the bcc phases were shown to be in excellent agreement with experimental results. Discrepancies observed in some experimental phase diagrams were explained on the basis of the calculated results.

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Thermodynamic calculations of phase equilibria in the Fe-Cr-S system

Abstract

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