C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
148/47
C22F 1/10 (2006.01)
Patent
CA 1135604
SM-1131B TREATING NICKEL BASE ALLOYS ABSTRACT OF THE DISCLOSURE A method of heat treating and coating a nickel base alloy containing chromium, titanium, aluminum, cobalt, molybdenum, tungsten, boron and carbon. The alloy is heated at a temperature of at least 2050°F to put most of the coarse gamma prime particles into solution; coated; treated at a temperature of at least 1600°F to lessen the sharp differential in chemistry between it and the coating at the interface thereof; treated within the temperature range of between 1500 and 1800°F to precipitate fine gamma prime particles, to coarsen existing gamma prime particles and to precipitate discrete carbide particles; and treated at a temperature within the range of between 1300 and 1500°F to precipitate additional fine gamma prime particles, and discrete carbide particles at grain boundaries.
358501
Boesch William J.
Maurer Gernant E.
George H. Riches And Associates
Special Metals Corporation
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