Bulletin of ANPA

Abstract submitted to ANPA Conference July 14–16, 2023

Volume 5, Number 1

Condensed Matter Physics and Material Science

Abstract ID: ANPA2023-N00065

Abstract:

ANPA2023-N00065: Thermodynamic and Surface Properties of Ni-Cr-Al-Ti Quaternary Liquid Alloys at Different Temperatures

Authors:

• Dipendra Kumar Sah; Tribhuvan University

• Dr. Shashit Kumar Yadav; T.U.

• Prof. Dr. Devendra Adhikari; T.U

• ;

Abstract Thermodynamic properties, including the integral excess Gibbs free energy of mixing and the activity of components of Ni-Cr-Al-Ti quaternary liquid alloy at a composition and a temperature, were estimated by the General Solution Model (GSM) using thermodynamic databases of constituent binary subsystems. The linear temperature-dependent interaction energy parameters were used in the Redlich-Kister polynomial in order to compute the thermodynamic properties of binary subsystems. The surface concentration of components and surface tension of the quaternary liquid alloy were estimated using the Butler equation at different compositions and temperatures from Ni, Cr, Al and Ti corners. The integral excess Gibbs free energy of mixing of the quaternary alloy at all compositions was found to be negative and the negative value of the integral excess Gibbs free energy of mixing was found to decrease with the increase in temperature. The activity of the components Ni, Al and Ti was found to increase while that of Cr decreased with the increase in temperature of the alloys. The surface concentration of Al was higher and that of Ni, Cr and Ti was lower than their respective bulk concentrations in the alloys. The surface tension of the alloys decreased linearly with the increase in temperature at all compositions.

To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00065