Cyclic oxidation of β-NiAl with various reactive element dopants at 1200 °C

► Reactive element (RE) doped β-NiAl alloys are produced by arc-melting. ► Cyclic oxidation behavior of the RE-doped alloys is compared. ► Effects of RE ion size and solubility on cyclic oxidation of NiAl are discussed. ► A co-doping strategy is proposed to optimize the cyclic oxidation performance.