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Calculation of phase diagrams and solidification paths of Al-rich Al−Li−Cu alloys

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Abstract

Thermodynamic models for the various phases in the Al-rich corner of the Al−Li−Cu system were developed on the basis of the phase equilibrium and limited thermodynamic data available in the literature and the thermodynamic descriptions of the three consitituent binary systems, Al−Li, Al−Cu, and Cu−Li. The calculated isothermal section at several temperatures and the liquidus projection are in ageement with the experimental determinations. Combining the thermodynamic models and the Scheil model or the modified Scheil model to incllude solidstate back-diffusion, quantitative solidification paths were predited. The calculated amount of the primary phase formed during solidification was compared with those obtained experimentally.

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Authors
  1. Sinn-Wen Chen
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  2. Ying-Yu Chuang
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  3. Y. Austin Chang
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  4. Men G. Chu
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Additional information

SINN-WEN CHEN, formerly Research Associate, Department of Materials Science and Engineering, University of Wisconsin-Madison, is Senior Scientist, Molten metal Processing Division Alcoa, Alcoa Laboratories, Alcoa Center, PA 15069. YING YU CHUANG, formerly Research Associate, Department of Materials Science and Engineering, University of Wiscornin-Madison, is deceased. Y. AUSTIN CHANG is with the Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706-1595. MEN G. CHU, Staff Scientist, is with the Molten Metal Processing Division, Alcoa Laboratories, Alcoa Center, PA 15069.

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Chen, SW., Chuang, YY., Austin Chang, Y. et al. Calculation of phase diagrams and solidification paths of Al-rich Al−Li−Cu alloys. Metall Trans A 22, 2837–2848 (1991). https://doi.org/10.1007/BF02650244

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  • DOI: https://doi.org/10.1007/BF02650244

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