Research on Microstructure and Mechanical Properties of Cr2Fe2NiAlCu High-entropy Alloys

High-entropy alloys Cr2Fe2NiAlCu with body centered cubic structure were prepared by vacuum arc furnace melting, which was heat treated at different temperatures.The effect of heat treatment on its mechanical properties was studied.The results show that heat treatment below 950 ℃ does not change the microstructure of single-phase solid solution Cr2Fe2NiAlCu.Heat treatment can improve the compressive properties of Cr2Fe2NiAlCu.The alloy heat-treated at 800 ℃ shows the best plasticity, the elasticity is also the best, meanwhile, the compressive strength reaches the maximum value of 1930 MPa.