C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
148/55.2
C22F 1/10 (2006.01)
Patent
CA 1286576
Abstract Varied Heating Rate Solution Heat Treatment for Superalloy Castings Methods for heat treating cast, nickel base superalloy articles are described. According to the invention, the articles are heated to progressively higher temperatures greater than the gamma prime solvus temperature and less than the incipient melting temperature. The incipient melting temperature is increased due to homogenization of segregate phases, while at the same time, the gamma prime goes into solution. The rate at which the temperature is increased closely approximates the rate at which the incipient melting temperature increases due to homogenization.
532782
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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