Creep resistant titanium aluminide alloy

Details Creep resistant titanium aluminide alloy Creep resistant titanium aluminide alloy

C - Chemistry, Metallurgy

22

C

C22C 14/00 (2006.01) C22C 1/02 (2006.01)

Patent

CA 2116987

Creep resistant titanium aluminide alloy article consisting essentially of, in atomic %, about 45 to about 48 Al, about 1.0 to about 3.0 Nb, about 0.5 to about 1.5 Mn, about 0.25 to about 0.75 Mo, about 0.25 to about 0.75 W, about 0.15 to about 0.3 Si and the balance titanium. The article has a heat treated microstructure including gamma phase, alpha-two phase and at least one additional particulate phase including, one or more or W, Mo, and Si dispersed as distinct regions in the microstructure.

Il s'agit d'un article fait d'un alliage de titane et d'aluminide consistant essentiellement en en pourcentage atomique environ 45 à 48 Al, environ 1,0 à environ 3,0 Nb, environ 0,5 à environ 1,5 Mn, environ 0,25 à environ 0,75 Mo, environ 0,25 à environ 0,75 W, environ 0,.15 à environ 0,3 Si et le reste est du titane. L'article possède une microstructure traitée à la chaleur comprenant une phase gamma, une phase alpha-deux et au moins une phase particulaire supplémentaire comprenant un ou plusieurs W, Mo, et Si distribués en tant que régions distinctes dans la microstructure.

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