| abstract |
TiAl alloy for use at high temperatures with the main constituents aluminum and titanium, in which the TiAl alloy has an aluminum proportion greater than or equal to 50 atomic% and comprises a matrix of γ-TiAl (1) and at least one phase (2, 3) of Al and Ti incorporated in the matrix of γ-TiAl and different from γ-TiAl, and precipitates of oxides (6, 7) and / or carbides (4), in which the alloy comprises the following elements with the established proportions: Nb 4 at 25 atomic% and Mo 1 at 10 atomic% and / or W 0.5 at 3.0 atomic% and / or Co 0.1 at 10 atomic% and / or Cr 0.5 to 3.0 atomic% and / or V 0.5 to 10.0 atomic% and / or Si 0.2 to 0.35 atomic% C 0 to 0.6 atomic% Zr 0 to 6 atomic% Y 0 to 0 , 5 atomic% Hf 0 to 0.3 atomic% Er 0 to 0.5 atomic% Gd 0 to 0.5 atomic% B 0 to 0.2 atomic% as well as the rest Ti. |