ALTITUDE (High Temperature Titanium Alloy for Future Aeronautical Applications)

The present project aims at developing a novel titanium alloy able to meet this challenge by exhibiting good resistance to fatigue-creep interaction (dwell sensitive fatigue) as well as good mechanical properties up to at least 650 °C. At these temperatures, oxidation is an issue that will have to be taken into account.
To reach this goal, the project will rely on some peculiar properties of several alloying elements: Mo for its beneficial effect on dwell fatigue resistance; C for its capability to improve the ability of Ti alloys to heat treatments at high temperatures; finally, Si combined with Ge, which are expected to improve the mechanical properties at the highest temperatures.
Furthermore, assessing the possible effect of these elements on oxidation is an important point that will be undertaken.