Utilizing Semi-Empirical Miedema’s Model for Gibbs Free Energy Calculations in Fe-Al-Cr and Fe-Al-Cu Alloys

Authors

  • Ali Kadhim Alsaedi Department of Physics, Faculty of Science, University of Kufa, Najaf, Iraq
  • Ahmed Rahem Karrawi Faculty of dentistry, University of Kufa, Najaf, Iraq
  • Hussien Abid Ali Bakir Mraity Department of Physics, Faculty of Science, University of Kufa, Najaf, Iraq
  • Faeq A. Al-Temimei Department of Physics, Faculty of Science, University of Kufa, Najaf, Iraq

Keywords:

Miedema’s model, Gibbs free energy, FeAlCr, FeAlCu alloys

Abstract

Abstract: The Miedema semi-empirical model represents a promising technique for estimating the Gibbs free energy (ΔG) in Fe-Al-Cr and Fe-Al-Cu alloys. In this study, the software Materials Analysis Applying Thermodynamics (MAAT) was utilized to calculate ΔG. The results indicated that the ΔG values for the binary alloys (Fe-Al, Fe-Cr, Al-Cr, and Al-Cu) were negative and lower than the ideal Gibbs free energy (ΔGideal), except for Fe-Cu, which exhibited a positive ΔG. For the ternary alloys (Fe-Al-Cr and Fe-Al-Cu), the ΔG values were predominantly negative across a wide range of compositions. This suggests the presence of driving forces promoting the formation of solid solutions from Fe, Al, Cr, and Cu throughout the entire composition range.

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Published

2025-08-23

How to Cite

Alsaedi, A. K., Karrawi, A. R., Mraity, H. A. A. B., & Al-Temimei, F. A. (2025). Utilizing Semi-Empirical Miedema’s Model for Gibbs Free Energy Calculations in Fe-Al-Cr and Fe-Al-Cu Alloys. Jordan Journal of Physics, 18(2), 157–164. Retrieved from https://jjp.yu.edu.jo/index.php/jjp/article/view/1127

Issue

Vol. 18 No. 2 (2025): Vol18 No2 2025

Section

Articles