Oxide precipitation in V-doped TiAl-based alloys

Oxide precipitation in V-doped TiAl-based alloys was studied by transmission electron microscopy (TEM). The experimental results showed that the interstitial oxygen in single-phase TiAl alloy precipitates in the form of oxide. A Ti–Al–O ternary oxide was observed and the structure of the precipitated oxide was determined. However, in two-phase TiAl/Ti3Al alloy no oxide was observed. The reasons responsible for the fact that oxide precipitates in TiAl-based alloys were discussed.