Corrosion fatigue characterization of reactor pressure vessel steels. [PWR; BWR]
During routine operation, light water reactor (LWR) pressure vessels are subjected to a variety of transients that result in time-varying stresses. Consequently, fatigue and environmentally-assisted fatigue are mechanisms of growth relevant to flaws in these pressure vessels. To provide a better understanding of the resistance of nuclear pressure vessel steels to these flaw growth processes, fracture mechanics data were generated on the rates of fatigue crack growth for SA508-2 and SA533B-1 steels in both room temperature air and 288/sup 0/C water. Areas investigated were: the relationship of crack growth rate to prior loading history; the effects of loading frequency and R ratio (K/sub min//K/sub max/) on crack growth rate as a function of the stress intensity factor range (..delta..K); transient aspects of the fatigue crack growth behavior; the effect of material chemistry (sulphur content) on fatigue crack; and growth rate; water chemistry effects (high-purity water versus simulated pressurized water reactotr (PWR) primary coolant).
- Research Organization:
- Babcock and Wilcox Co., Alliance, OH (USA). Research and Development Div.
- OSTI ID:
- 6821903
- Report Number(s):
- EPRI-NP-2775; ON: DE83901109
- Country of Publication:
- United States
- Language:
- English
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Corrosion fatigue of pressure vessel steels in PWR environments--influence of steel sulfur content
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Related Subjects
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
BWR TYPE REACTORS
CARBON STEELS
CHEMISTRY
CONTAINERS
CORROSION FATIGUE
DYNAMIC LOADS
FATIGUE
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
PRESSURE VESSELS
PWR TYPE REACTORS
REACTOR MATERIALS
REACTORS
STEEL-ASTM-A508
STEEL-ASTM-A533-B
STEELS
STRESS ANALYSIS
STRESSES
TEST FACILITIES
THERMAL STRESSES
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS