A strong, ductile, high-entropy FeCoCrNi alloy with fine grains fabricated via additive manufacturing and a single cold deformation and annealing cycle

To enhance the efficiency and quality of grain refinement achieved by cold deformation, the structural state of the material before cold deformation should be changed radically. In this study, a FeCoCrNi high-entropy alloy fabricated via additive manufacturing (AM) was chosen as the initial material for investigating cold deformation. The microstructure and mechanical properties of compressed samples (50 % reduction along the building direction)...