Abstract
A series of 3d transition metal high-entropy alloys, AlCoCrVX (X= Fe/Ni/Cu), were prepared by a vacuum arc-melting, and their phase components, microstructures, and compressive properties were investigated. The phase components of the alloys with X = Fe and Ni belonged to the BCC phase, while that of the alloy with X = Cu was composed of a typical BCC + FCC dual phase. The added Cu mainly distributed in the interdendrites while the Fe and Ni distributed in the dendrites. Moreover, the alloy with X = Cu possesses a good synergy in strength and plasticity (ultimate strength: 2300 MPa, plastic strain: 5%) compared to the alloy with X = Fe, Ni, which might stem from the impingement role of netlike Cu-rich FCC interdendrites on crack propagation.