Design of a new cobalt base nano-lamellar eutectic high entropy alloy

• A new nano lamellar eutectic cobalt-base high entropy alloy (EHEA) was developed. • The alloy was designed based on analytical consideration and Thermocalc calculation. • The alloy exhibited superior mechanical properties than Ni based EHEAs. Inspired by the outstanding properties of cobalt-base superalloys, an effort has been made to develop cobalt-base high entropy alloy for high temperature applications based on valance electron...