An important improvement of strength and ductility on a new type of CoCr2.5FeNi2TiW0.5 high entropy alloys under two different protective gases by selective laser melting

●CoCr2.5FeNi2TiW0.5 HEA was fabricated to conduct additive manufacturing by selective laser melting technology.●The sample structure has composed a matrix BCC with precipitates TiN (FCC structure)under N2 protection.●Samples under N2 protection show better mechanical properties, compared with the counterpart under Ar protection.