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Pressure effects on thermo-mechanical properties of intermetallic B2-type FeAl alloy

Author

Listed:
  • Nguyen Viet Tuyen

    (Institute of Research and Development, Duy Tan University)

  • Ho Khac Hieu

    (Institute of Research and Development, Duy Tan University)

  • Nguyen Ba Duc

    (Tan Trao University)

  • Tran Thi Hai

    (Hong Duc University)

  • Nguyen Thi Hong

    (Hong Duc University)

  • Tran Thi Ha

    (Laboratory of Advanced Materials Chemistry, Advanced Institute of Materials Science, Ton Duc Thang University
    Faculty of Applied Sciences, Ton Duc Thang University)

Abstract

The pressure effects on thermo-mechanical properties of B2-type FeAl compound have been investigated based on the moment method in statistical mechanics. We derive analytical expressions of equation-of-state, isothermal bulk modulus and specific heats at constant volume and constant pressure of B2-type iron aluminide intermetallic compound. Numerical calculations for lattice parameter, isothermal bulk modulus, Young’s modulus, shear modulus and specific heat at constant pressure of B2-type Fe-40 at.% Al have been performed up to pressure of 10 GPa. Our research shows that the elastic moduli are linear proportional to pressure and the specific heat at constant pressure diminishes strongly at temperature below 300 K. The present statistical moment method results are compared with available experimental data as well as ab initio calculations when possible to verify the developed theory. This research proposes the potential of the moment method in the investigation of thermo-mechanical properties of materials under pressure. Graphical abstract

Suggested Citation

  • Nguyen Viet Tuyen & Ho Khac Hieu & Nguyen Ba Duc & Tran Thi Hai & Nguyen Thi Hong & Tran Thi Ha, 2020. "Pressure effects on thermo-mechanical properties of intermetallic B2-type FeAl alloy," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 93(1), pages 1-8, January.
    • Handle: RePEc:spr:eurphb:v:93:y:2020:i:1:d:10.1140_epjb_e2019-100477-8
    DOI: 10.1140/epjb/e2019-100477-8
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