Thermal-Stress Fatigue Behavior of Twenty-Six Superalloys

PT Bizon; DA Spera

doi:10.1520/STP27887S

SYMPOSIA PAPER Published: 01 January 1976

STP27887S

Thermal-Stress Fatigue Behavior of Twenty-Six Superalloys

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The comparative thermal-stress fatigue resistances of 26 nickel- and cobalt-base alloys were determined by fluidized bed tests. Cycles to cracking differed by almost three orders of magnitude for these materials, with directional solidification and surface protection showing definite benefit. The alloy-coating combination with the highest thermal-stress fatigue resistance was directionally solidified NASA TAZ-8A with an RT-XP coating. Its oxidation resistance was also excellent, showing approximately a ½ percent weight loss after 14 000 fluidized bed cycles.

Author Information

Bizon, PT

National Aeronautics and Space Administration Lewis Research Center, Cleveland, Ohio

Spera, DA

National Aeronautics and Space Administration Lewis Research Center, Cleveland, Ohio

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Details

Developed by Committee: E08

Pages: 106–122

DOI: 10.1520/STP27887S

ISBN-EB: 978-0-8031-4685-3

ISBN-13: 978-0-8031-0586-7

Thermal-Stress Fatigue Behavior of Twenty-Six Superalloys

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