C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 14/00 (2006.01) C22F 1/18 (2006.01)
Patent
CA 2188898
A method for producing fine-grained lamellar microstructures in powder metallurgy (P/M) and wrought gamma titanium aluminides comprises the steps of: (a) a cyclic heat treatment at a maximum temperature in the range of about 10°C above to about 10°C below the alpha-transus temperature (T.alpha.) of the alloy, and (b) a secondary heat treatment of thus cyclically heat treated alloy at a temperature between 750°C and 1050°C for 4 to 100 hours. For cast gamma alloys, the method comprises additionally the step of a solution treatment at a temperature in the range of about 30°C to 70°C above T.alpha. followed by a water or an oil quench before the two steps described above. The alloys with the resulting fine-grained lamellar microstructure have an advantageous combination of mechanical properties - tensile strength, ductility, fracture toughness, and creep resistance.
Au Peter
Beddoes Jonathan C.
Wallace William
Zhao Linruo
Au Peter
Beddoes Jonathan C.
National Research Council Of Canada
Szereszewski Juliusz M.sc.
Wallace William
LandOfFree
Method to produce fine-grained lamellar microstructures in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method to produce fine-grained lamellar microstructures in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to produce fine-grained lamellar microstructures in... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1416395