Characterization of cracking behavior using posttest fractographic analysis
- SRI International, Menlo Park, CA (USA)
A determination of time to initiation of stress corrosion cracking in structures and test specimens is important for performing structural failure analysis and for setting inspection intervals. Yet it is seldom possible to establish how much of a component's lifetime represents the time to initiation of fracture and how much represents postinitiation crack growth. This exploratory research project was undertaken to examine the feasibility of determining crack initiation times and crack growth rates from posttest examination of fracture surfaces of constant-extension-rate-test (CERT) specimens by using the fracture reconstruction applying surface topography analysis (FRASTA) technique. The specimens used in this study were Type 304 stainless steel fractured in several boiling water reactor (BWR) aqueous environments. 2 refs., 25 figs., 2 tabs.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (USA); SRI International, Menlo Park, CA (USA)
- Sponsoring Organization:
- EPRI; Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI ID:
- 6364242
- Report Number(s):
- EPRI-NP-7173; TRN: 91-007687
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BWR TYPE REACTORS
MAINTENANCE
FRACTOGRAPHY
PERFORMANCE
STAINLESS STEEL-304
STRESS CORROSION
CRACK PROPAGATION
CRACKS
DATA
DEFORMATION
FAILURE MODE ANALYSIS
FRACTURE MECHANICS
HYDROCHLORIC ACID
INSPECTION
MEASURING METHODS
MECHANICAL TESTS
SCANNING ELECTRON MICROSCOPY
SCHEDULES
STRAIN RATE
SULFURIC ACID
TIME DEPENDENCE
ALLOYS
AUSTENITIC STEELS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
ELECTRON MICROSCOPY
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
MECHANICS
MICROSCOPY
NICKEL ALLOYS
REACTORS
STAINLESS STEELS
STEEL-CR19NI10
STEELS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TESTING
WATER COOLED REACTORS
WATER MODERATED REACTORS
360105* - Metals & Alloys- Corrosion & Erosion
210100 - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled