Corrosion-assisted cracking of stainless and low-alloy steels in LWR (light water reactor) environments: Final report
Technical Report
·
OSTI ID:6683579
The primary objective of this investigation was to develop a quantitative model which could correctly predict the effects of material, environment, and stress-related parameters on the stress-corrosion and the corrosion fatigue behavior of stainless and low-alloy steels in high-temperature water. The approach used was, first, to hypothesize that the film-rupture mechanism of environmentally controlled crack propagation was appropriate for these ductile alloy/aqueous environment systems; second, to quantify the parameters of importance in this mechanism, i.e., the crack-tip environment and the electrode reaction rates in such an environment; and, finally, to evolve theoretical predictions of crack propagation rates for variations in material, environment, and stress parameters, and to examine the validity of the original hypothesis by comparing these predictions with observation. It was concluded that the film-rupture model of environmentally enhanced cracking was statistically valid for the stainless steel and low-alloy steel/high-temperature water systems - at least for the metallurgical and environmental conditions peculiar to those in piping and pressure vessels of light water reactors.
- Research Organization:
- General Electric Co., Schenectady, NY (USA). Materials Lab.
- OSTI ID:
- 6683579
- Report Number(s):
- EPRI-NP-5064-M; ON: TI87920308
- Country of Publication:
- United States
- Language:
- English
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21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
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36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BWR TYPE REACTORS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION FATIGUE
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
CRACKS
ELECTROLYSIS
FARADAY LAWS
FATIGUE
FRACTURE MECHANICS
FRACTURE PROPERTIES
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
LYSIS
MATERIALS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
MECHANICS
OXIDATION
PH VALUE
REACTOR COMPONENTS
REACTOR MATERIALS
REACTORS
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STEELS
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STRESS INTENSITY FACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
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36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BWR TYPE REACTORS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION FATIGUE
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
CRACKS
ELECTROLYSIS
FARADAY LAWS
FATIGUE
FRACTURE MECHANICS
FRACTURE PROPERTIES
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
LYSIS
MATERIALS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
MECHANICS
OXIDATION
PH VALUE
REACTOR COMPONENTS
REACTOR MATERIALS
REACTORS
STAINLESS STEELS
STEELS
STRESS CORROSION
STRESS INTENSITY FACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS