Fatigue crack growth rates of low-carbon and stainless piping steels in PWR environment. [A 516 Gr 70 carbon steel; SA 351-CF8A ss]
Fatigue crack growth rates of A 106 Gr. C and A 516 Gr. 70 carbon steels, and A 351-CF8A stainless steel in PWR environments have been determined over a load ratio range (R) of 0.2 to 0.85, a temperature range of 93/sup 0/ to 338/sup 0/C, and a test frequency range of 17 mHz to 1 Hz using sinusoidal waveforms. In addition, growth rates have been determined for various orientations of the crack plane with respect to the product form. Crack growth rates in 288/sup 0/C air environments have been measured in order to provide a reference baseline. These results define the magnitude of and major influences on the environmentally-assisted fatigue crack growth rates for these piping steels, and are supported by fractographic observations of the fatigue fracture surface.
- Research Organization:
- Materials Engineering Associates, Inc., Lanham, MD (USA)
- OSTI ID:
- 6106414
- Report Number(s):
- NUREG/CR-3945; ON: TI85900555
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CARBON STEELS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
CRYSTAL STRUCTURE
FATIGUE
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
PIPES
PWR TYPE REACTORS
REACTOR MATERIALS
REACTORS
STAINLESS STEELS
STEEL-ASTM-A106
STEELS
WATER COOLED REACTORS
WATER MODERATED REACTORS