High-entropy alloys: Structure, mechanical properties, deformation mechanisms and application

The article considers a brief review of the foreign publications on study structure, phase composition and properties five-component high-entropy alloys (HEAs) in different structural states wide temperature range over past two decades. HEAs attract attention scientists with their unique unusual properties. difficulties comparative analysis generalization data are noted due to methods obtaining HEAs, modes mechanical tests for uniaxial compression tension, sizes shapes samples, types thermal treatments, (bcc fcc crystal lattices). It is that HEA bcc lattice has mainly high strength low plasticity, increased plasticity. A significant increase FeMnCoCrNi can be achieved by alloying boron optimizing parameters treatment at carbon amount 1 % (at.). deformation curves analyzed –196 ÷ 800 °C indicate an yield decrease grain size from 150 5 microns. As decreases, elongation increase. effect rate ultimate strength, which most noticeable rates 10 –2 3 s –1 . features behavior mono- poly-crystalline noted. complex operational makes it possible use them various industries. There good prospects using energy modify surface layers further improve