Tungsten-based bcc-superalloys

• First demonstration of a Tungsten-based bcc-superalloy concept comprising bcc b e t -W matrix reinforced by ’ TiFe intermetallic phase. W-Ti-Fe ternary phase equilibria experimentally evaluated and taken in new CALPHAD thermodynamic model to instruct onward computational design future bcc-superalloys. Nano-scale ∼ 50nm precipitation occurs during heat treatment at 1250 ∘ C, which share (001) \\(001) B 2 ‘cube-cube’ orientation relationship with the W rich matrix. Impressive high temperature compressive strength 500 MPa 1000 C. Applications from nuclear energy rockets jet engines are underpinned advanced materials. Whilst state art, performance current nickel-based superalloys is fundamentally limited Ni’s melting point, T m = 1455 C . Here, we develop an analogous superalloy but superior capability transitioning tungsten base, 3422 This strategy involves reinforcing β ′ compound, results impressive strengths approach has wider applicability other alloy bases, including Mo, Ta, Nb, as well refractory-metal entropy alloys (RHEAs). By investigation underlying equilibria, modelling, characterisation mechanical properties, demonstrate tungsten-based bcc-superalloys class