Figure 4

Mechanical property and microstructure of the eutectic dual-phase HEAs with different proportion of FCC phase. (a) Stress-strain curves of a dual-phase HEA (The dark line and the red line represented the as-cast sample and its cold-rolled counterpart respectively). (b) Stress-strain curves of two AlCoCrFeNi dual-phase HEAs distinguished by the proportion of FCC phase. (c) Ni2.1 (the pink line) and Ni2.4 (the purple line) corresponding to the one with less and more FCC phase respectively, as shown by the optical microscope images. The ones in deep color were BCC phases while the others were FCC phases.