Exceptional Combinations of Tensile Properties and Corrosion Resistance in a Single-Phase Ti1.6ZrNbMo0.35 Refractory High-Entropy Alloy

In this study, we introduce a novel single-phase Ti 1 & sdot;6 ZrNbMo 0.35 refractory high -entropy alloy (RHEA), synthesized through vacuum arc -melting. The as -cast RHEA demonstrates excellent mechanical properties with a high yield strength of -930 MPa and a large tensile strain of -15.4 %, achieved through severe lattice distortion. Moreover, our investigation reveals the superior corrosion resistance of the RHEA in 3.5 wt% NaCl solution. The remarkable anti -corrosion properties are attributed to the single-phase structure, the increase of Mo 6 + oxides in the passive film and continuous passive oxidation of the elements. This work provides a new and significant approach to designing novel RHEAs with excellent combinations of strength -ductility synergy and superior corrosion resistance.