Nickel-base brazing filler metals for aircraft gas turbine application
Brazed joints of the nickel-base brazing filler metal demonstrated superior ambient temperature shear strength as well as ambient temperature and 482/sup 0/C (900/sup 0/F) fatigue strength when compared to the substantially more expensive gold-base filler metal in laboratory mechanical testing. A similar fatigue strength advantage was observed at these temperatures for aluminide-coated braze joints of filler metal compared to gold base filler metal. On the basis of laboratory testing to simulate the engine environment, both uncoated and aluminide-coated brazed joints of nickel and gold base filler metal-displayed excellent oxidation and salt corrosion resistance. Repair procedures of individual braze joints were established and demonstrated for nickel base brazing filler metal. Acceptable experience in both manufacturing and engine testing has led to incorporation of the cost-effective nickel base brazing filler metal into a production engine model.
- Research Organization:
- United Technologies Corp., East Hartford, CT
- OSTI ID:
- 6394060
- Journal Information:
- Weld. J. (Miami); (United States), Vol. 56:10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
FILLER METALS
CORROSION
WELDABILITY
STAINLESS STEEL-410
BRAZING
BORON ALLOYS
CHROMIUM ALLOYS
IRON ALLOYS
NICKEL BASE ALLOYS
SILICON ALLOYS
GOLD BASE ALLOYS
AIRCRAFT
GAS TUNGSTEN-ARC WELDING
GAS TURBINES
REPAIR
ALLOYS
ARC WELDING
CHEMICAL REACTIONS
CHROMIUM STEELS
CORROSION RESISTANT ALLOYS
FABRICATION
GOLD ALLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON BASE ALLOYS
JOINING
MATERIALS
NICKEL ALLOYS
STAINLESS STEELS
STEELS
TURBINES
TURBOMACHINERY
WELDING
360105* - Metals & Alloys- Corrosion & Erosion
320201 - Energy Conservation
Consumption
& Utilization- Transportation- Air & Aerospace