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Thermodynamic analysis of the iron-copper system I: The stable and metastable phase equilibria

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Abstract

Thermodynamic and phase diagram data in the Fe-Cu system are evaluated. For the liquid and fcc phases, the Margules-type of equations is used. For the bcc phase, the same type of equation is used to describe the non-magnetic contribution to the Gibbs energy. In addition, a magnetic term is included. Using the thermodynamic equations derived from equilibrium data, the stable and metastable equilibria of this system are calculated. Agreement between the calculated and experimental phase diagram is good except for temperatures higher than 1720 K. For these temperatures, the calculated liquidus tends to be higher. The possibility of supercooling which may account for some of the lower temperatures measured should not be excluded. The calculated metastable miscibility gap of the liquid phase also agrees with the experimental data.

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Authors and Affiliations

  1. Department of Metallurgical and Mineral Engineering, University of Wisconsin, 53706, Madison, WI

    Ying-Yu Chuang (Research Associate) & Y. Austin Chang (Professor and Chairman)

  2. Department of Metallurgical and Mineral Engineering, University of Wisconsin, 53706, Madison, WI

    Rainer Schmid (Visiting Associate Professor)

  3. Technical University Clausthal, West Germany

    Rainer Schmid (Visiting Associate Professor)

Authors
  1. Ying-Yu Chuang
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  2. Rainer Schmid
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  3. Y. Austin Chang
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Chuang, YY., Schmid, R. & Chang, Y.A. Thermodynamic analysis of the iron-copper system I: The stable and metastable phase equilibria. Metall Trans A 15, 1921–1930 (1984). https://doi.org/10.1007/BF02664905

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  • DOI: https://doi.org/10.1007/BF02664905

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