Exploring V-Fe-Co-Ni-Al and V-Fe-Co-Ni-Cu high entropy alloys for magnetocaloric applications
نویسندگان
چکیده
A series of V1?x-Fe-Co-Ni-Al1+x and V1?x-Fe-Co-Ni-Cu1+x high entropy alloys with varying compositions (0 ? x 0.75) has been investigated for magnetocaloric applications. Compositions were selected according to established properties, such as configurational entropy, atomic size difference, enthalpy mixing. To study the influence composition on magnetic ordering temperatures, V (Al/Cu) contents changed while content Fe, Co Ni was retained at 20 at. % each. The crystal structure microstructure as-cast compared literature phase guidelines thermodynamic calculations based CALPHAD approach. V-Fe-Co-Ni-Al compounds are monophasic crystallize in a disordered body centered cubic or its ordered B2 variant, V-Fe-Co-Ni-Cu all multiphasic. Magnetic transitions system span over 400 K, Curie temperature ranging from 155 K equiatomic VFeCoNiAl, 456 non-equiatomic V0.25FeCoNiAl1.75. display that about 150 230 VFeCoNiCu 736 V0.25FeCoNiCu1.75. properties evaluated by means density functional theory. Individual element-specific moments, exchange integrals between pairs, temperatures calculated. V0.85FeCoNiCu1.15 is due 329 calculated isothermal change 0.75 J/kg.K field 5 T comparable other 3d metal-based form solid solutions.
منابع مشابه
Ternary Ni-Fe-Co Alloys Nanowire Electrodeposition
Nanowire is a cylindrical nano-structure with nanometer dimensions. In this research, the studied nanowire was made from the magnetic triple Ni-Fe-Co alloy.
 We utilized ordered porous anodic aluminum oxide as a template for the nanowire deposition. The nanowire arrays were electrodeposited in the cylindrical pores of the oxide layer by AC potential in a simple sulfate bath. Then the relatio...
متن کاملTernary Ni-Fe-Co Alloys Nanowire Electrodeposition
Nanowire is a cylindrical nano-structure with nanometer dimensions. In this research, the studied nanowire was made from the magnetic triple Ni-Fe-Co alloy. We utilized ordered porous anodic aluminum oxide as a template for the nanowire deposition. The nanowire arrays were electrodeposited in the cylindrical pores of the oxide layer by AC potential in a simple sulfate bath. Then the relation ...
متن کاملCALCULATION OF THERMODYNAMIC PROPERTIES OF Al-Fe, Al-Ni AND Ni-Fe ALLOYS USING FACTSAGE
Thermodynamic predicting analysis of three binary systems Al-Fe, Al-Ni and Ni-Fe are shown in this paper. Thermodynamic analysis involved calculation of activities, coefficient of activities, partial and integral values for enthalpies and Gibbs energies of mixing and excess energies at three different temperatures: 1873K, 1900K and 1973K, as well as calculated phase diagrams, for the investigat...
متن کاملInternal Friction in Fe-Co-Ni-Ti Shape Memory Alloys
The anomalies of the temperature dependences of the logarithmic decrement and eigen frequency of the free damped vibrations for Fe-Co-Ni-Ti shape memory alloys were first found in the vicinity of the reverse ay martensitic transformation. It was shown the damping capacity in the alloys investigated is comparable with that for TiNi based alloys.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Alloys and Compounds
سال: 2022
ISSN: ['0925-8388', '1873-4669']
DOI: https://doi.org/10.1016/j.jallcom.2022.166040