Concentration Dependence of Thermodynamic and Dynamic Parameters of High-Entropy Alloys.

The concentration dependences of melting temperature T^s.s. _s, Debye temperature ss.. Θ ^s.s._D and lattice parameter a_s.s. for massive high-entropy alloys based on Fe, Ni, Co, Cu and Al were analyzed within the concept of additivity of physical values of high-entropy alloys. 4- and 5-component alloys were considered in the form of single-phase solid solutions. It was established that T^s.s. _s can vary within 150 K, that is,T^s.s. _s insensitive to changes in the concentration of individual atoms. It is even less sensitive to concentration Θ ^s.s._D since the maximum value is ss. . ∆Θ^s.s._D ≅80 K. The lattice parameters change in accordance with Vegard's rule. [ABSTRACT FROM AUTHOR]