Thermo-elastic properties of bcc Mn-rich high-entropy alloy

Thermo-elastic properties of bcc Mn-rich high-entropy alloy

We report a chemically disordered solid solution, Al0.6Cr0.2MnFe0.5Co0.3Ni0.5, based on a body-centered cubic underlying lattice with the measured Curie temperature of ∼380 K. First-principles alloy theory is employed to investigate the temperature-dependent free energy, elastic constants, and coeff...

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Veröffentlicht in:Applied physics letters 2020-10, Vol.117 (16)
Hauptverfasser: Huang, Shuo, Dong, Zhihua, Mu, Wangzhong, Ström, Valter, Chai, Guocai, Vitos, Levente
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Body centered cubic lattice
Curie temperature
elastic behavior
Elastic properties
Ferromagnetism
First principles
Free energy
High entropy alloys
Magnetic properties
Magnetic transition
Mechanical analysis
Solid solutions
Temperature dependence
Thermal expansion
Thermoelastic properties
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Zusammenfassung:We report a chemically disordered solid solution, Al0.6Cr0.2MnFe0.5Co0.3Ni0.5, based on a body-centered cubic underlying lattice with the measured Curie temperature of ∼380 K. First-principles alloy theory is employed to investigate the temperature-dependent free energy, elastic constants, and coefficient of thermal expansion at the ferromagnetic and paramagnetic states. Theory and experiment are found to strengthen each other, and the results indicate that the magnetic state has a strong impact on the thermo-elastic properties of the considered alloy. The present advance in the thermo-magneto-elasticity enhances the understanding required for controlling the magnetic and mechanical response of multi-component systems.
ISSN:0003-6951
1077-3118
1077-3118
DOI:10.1063/5.0017989