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Thermodynamic Assessment and Calculation of the Ti-Al System

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Abstract

A thermodynamic description of the Ti-Al system has been developed. Three different analytical descriptions were used to describe the three different types of phases occurring in the Ti-Al system: the stoichiometric compounds, the disordered solution phases, and the ordered inter-metallic compounds which have homogeneity ranges. A least-squares technique was used to optimize the thermodynamic quantities of the analytical description using experimental data available in the literature. The calculated phase diagram, as well as the thermodynamic func-tions, agree well with the critically evaluated experimental data from the literature.

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Authors and Affiliations

  1. University of Wisconsin-Madison, USA

    U. R. Kattner (Research Associate,Guest Scientist)

  2. National Institute of Standards and Technology, 20899, Gaithersburg, MD

    U. R. Kattner (Research Associate,Guest Scientist)

  3. ALCOA Center, 15069, PA

    J. -C. Lin (Staff Scientist with ALCOA Technical Center)

  4. Department of Materials Science and Engineering, University of Wisconsin-Madison, 53706, Madison, WI

    Y. A. Chang (Distinguished Professor)

Authors
  1. U. R. Kattner
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  2. J. -C. Lin
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  3. Y. A. Chang
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Formerly with the University of Wisconsin-Madison

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Kattner, U.R., Lin, J.C. & Chang, Y.A. Thermodynamic Assessment and Calculation of the Ti-Al System. Metall Trans A 23, 2081–2090 (1992). https://doi.org/10.1007/BF02646001

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  • DOI: https://doi.org/10.1007/BF02646001

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