Evaluation of the toughness of austenitic stainless steel pipe weldments. Final report
The strength of stainless steel weldments in nuclear piping systems is typically chosen larger than that of the base piping material to address welding uncertainties. Associated with this higher strength one often finds a degradation in fracture toughness and reduced ability to support load in the presence of a weldment crack. In this research, typical nuclear piping flux welds were tested to determine if their load-carrying ability was consistent with ASME flaw acceptance criteria. Fracture behavior, tensile properties, and Charpy toughness were evaluated at LWR operating temperatures. The measured toughness was well above the minimum value assumed in the Section XI flaw acceptance criteria for austenitic flux weldments. 16 refs., 51 figs.
- Research Organization:
- General Electric Co., San Jose, CA (USA). Nuclear Energy Business Operations
- OSTI ID:
- 5708702
- Report Number(s):
- EPRI-NP-4668; ON: TI86920391
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
BWR TYPE REACTORS
CALCULATION METHODS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
EVALUATION
FAILURES
FRACTURE MECHANICS
FRACTURES
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS TESTING
MECHANICS
PIPES
PWR TYPE REACTORS
REACTORS
STAINLESS STEELS
STEELS
TESTING
WATER COOLED REACTORS
WATER MODERATED REACTORS
WELDED JOINTS