C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/16, 148/34.7
C22C 19/05 (2006.01) C21D 8/00 (2006.01) C22F 1/10 (2006.01)
Patent
CA 1176961
Improved Superalloy Properties Through Stress Modified Gamma Prime Morphology Abstract A high strength nickel base superalloy having a novel microstructure is described. The article consists of a gamma matrix containing a oriented gamma prime second phase having a plate or rod form. This noncuboidal gamma prime phase is produced by aging solution treated material under an applied stress. When this process is applied to a certain class of superalloys which are rich in refractory elements, the resultant structure provides exceptional resistance to creep at elevated temperatures.
386449
Kear Bernard H.
Lemkey Frank D.
Pearson David D.
Swabey Ogilvy Renault
United Technologies Corporation
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