fig3

Figure 3. Mechanical performance of HEAs. (A) Engineering stress-strain curves of the HS-HEA and HM-HEA. The mechanical performance of FeCoNiCrPd^[25] HEA and gradient FeCoCrNiMn^[26] HEA is shown for comparison; (B) Strain hardening rate curves as a function of the true strain for both HS-HEA and HM-HEA. The inserted SEM micrograph shows the ruptured surface of the HS-HEA sample; (C) LUR stress-strain curves of HM-HEA and HS-HEA; (D) The evolution of calculated HDI stress versus true strain. HEAs: High-entropy alloys; HEA: high-entropy alloy; HS: heterogeneous structure; HM: homogenized; SEM: scanning electron microscope; LUR: loading-unloading-reloading; HDI: hetero-deformation induced.