Achieving excellent strength-ductility synergy in twinned NiCoCr medium-entropy alloy via Al/Ta co-doping

Alloying is an effective strategy to tailor microstructure and mechanical properties of metallic materials to overcome the strength-ductility trade-off dilemma. In this work, we combined a novel alloy design principle, i.e. harvesting pronounced solid solution hardening (SSH) based on the misfit volumes engineering, and simultaneously, architecting the ductile matrix based on the valence electron concentrations (VEC) criterion, to fulfill an...