Abstract Due to their high specific strength and temperature resistance, ? -titanium aluminides ( -TiAl) have a growing importance for automotive aerospace applications. However, conventional processing is very challenging due the inherent brittleness of material. Therefore, new manufacturing techniques methods be established. Additive such as electron powder bed fusion (PBF-EB/M) are favored, ...

This work reexamines the insertion of O atoms in L10 γ-TiAl system using first-principles calculations and thermodynamic modeling independent point defect approximation. It includes a study intrinsic defects, many alloying elements (more than twenty were considered), as well their interaction with oxygen. The formation complex defects composed either vacancies, anti-sites or solute is then stud...