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Pressure effects on alloy phase diagrams

ORAL

Abstract

The phase diagrams of binary alloys have been found to vary with pressure. Within the framework of solution-type models, the variation is
controlled by the pressure dependence of the elemental end members, which is relatively well known, and that of the excess interaction, which is relatively unknown. Exact thermodynamic relationships for the pressure and temperature dependence of the interaction parameters in an alloy solution are developed and related to the composition dependence of the excess thermodynamic quantities measured at ambient conditions. The effects of pressure modification of selected phase diagrams, including transformation from isomorphous to eutectic forms and shifts of the eutectic point are explored. Model predictions are compared with experimental data.

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Presenters

  • Guy Makov

    Material Engineering, Ben-Gurion University of the Negev, material engineering, bgu, Materials Engineering Department, Ben-Gurion University of the Negev, Ben-Gurion University of the Negev

Authors

  • Guy Makov

    Material Engineering, Ben-Gurion University of the Negev, material engineering, bgu, Materials Engineering Department, Ben-Gurion University of the Negev, Ben-Gurion University of the Negev

  • Moran Emuna

    Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel; Physics Department, Nuclear Research Centre-Negev, Beer-Sheva 84190, Israel

  • Shir Ben Shalom

    Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel

  • Eyal Yahel

    Physics Department, Nuclear Research Centre-Negev, Beer-Sheva 84190, Israel

  • Han Gyeol Kim

    Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea

  • Joonho Lee

    Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea