Oxidation of Ti-46Al-8Ta in air at 700 °C and 800 °C under thermal cycling conditions

► Good resistance of Ti-46Al-8Ta to cyclic oxidation in air for up to 1000 h. ► Negligible material loss, micrometric thickness and very good adhesion of scale. ► Composition and structure of scale on Ti-46Al-8Ta and Ti-46Al-8Nb similar. ► Micromechanical properties of scale better on Ti-46Al-8Ta.