Mechanical properties of cast multicomponent alloys under high temperatures


I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Modern Problems in Physical Materials Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2009, #18


Nine high entropy (S = 13,3—19,1 J?mole-1-1) 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.