Metal fusion bonding – Process – Critical work component – temperature – or pressure
Patent
1995-11-21
1997-02-04
Heinrich, Samuel M.
Metal fusion bonding
Process
Critical work component, temperature, or pressure
228203, 228205, 148528, 148534, 2988921, B23K 120, C23C 834
Patent
active
055989683
ABSTRACT:
A process is provided for manufacturing and repairing components, and particularly superalloy components such as gas turbine engine components. The invention entails forming precipitates in a surface of the article that has been cold worked as a result of surface machining, cleaning, handling, etc. The precipitates serve to prevent recrystallization and formation of a secondary reaction zone in the cold worked surface of the superalloy when subsequently exposed to temperatures approaching the solution temperature of the superalloy, such that the microstructure and mechanical properties of the superalloy article are preserved.
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Metals Handbook Ninth Edition, vol. 6, pp. 1001-1021, copyright 1983.
Bartz Andi K.
Fink Paul J.
Schaeffer Jon C.
General Electric Company
Heinrich Samuel M.
Hess Andrew C.
Narciso David L.
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