Narrow Results

The mixing properties of liquid Al–Au alloys with respect to the concentration of each constituent is determined using a method based on hard sphere system and pseudo-potential perturbation. These models were used to get relevant information on mixing properties of the Al–Au alloys like the Gibbs energy and the entropy of mixing. The concentration fluctuations, chemical short range order for the hard sphere mixture (quasi-lattice theory) and the activity are calculated to know the extent of order in the liquid alloys. The results revealed that there is a degree of ordering in liquid Al–Au alloy (hetero-coordinated).

Ab initio computational studies of size-dependent Actinide-based High Entropy Alloys (HEAs) nanomaterials (AHEANMs) have emerged as a powerful tool to unravel the fundamental properties and behaviors of these complex systems. AHEAs have demonstrated remarkable mechanical, thermal, and radiation-resistant characteristics making them promising candidates for advanced technological applications. In this context, the size-dependent properties like cohesive energy, melting temperature, Debye temperature, Gibbs free energy of mixing, Heat of mixing, entropy of mixing, etc., have been studied.

In the paper, NbTiAlVTaLa_x (molar ratio, x=0, 0.1, 0.2) high entropy alloys were prepared by arc melting mixtures of the pure metal elements. The NbTiAlVTaLa_x alloys are composed mainly of BCC solid solution, and have a typical cast dendritic microstructure. The cryogenic resistivities of NbTiAlVTaLa_x, CoCrFeNiCu and CoCrFeNiAl high entropy alloys had been investigated. With the increase of La addition, the resistivities of NbTiAlVTaLa_x alloys increase. With the temperature increasing, the resistivity of CoCrFeNiCu alloy decreases, while that of CoCrFeNiAl alloy increases.