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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