Mechanical properties of cast multicomponent alloys under high temperatures

Abstract

Nine high entropy (S = 13,3—19,1 J?mole^-1?К^-1) cast alloys containing from 5 to 10 predominantly equiatomic solutions are made according to thermodynamic approach. After high-speed melts cooling one- and two-phase alloys based on substitutional solid solutions with bcc or combined with hexagonal crystal lattice are obtained. Alloys have dendritic structure with different degree of dispersion and ratio to interdendrite volume. Second-phase allocations are observed in some alloys. The alloys posses high thermal stability, high strengthen characteristics values in temperature range of 20—1000 ^оС under conditions of short and long loading, reveal low creeping under high temperatures.