Toughness of austenitic stainless steel pipe welds: Topical report
The objectives of the program were to characterize the toughness of austenitic base and weld metals, and to evaluate the application of elastic-plastic fracture mechanics testing methodologies, developed for ferritic steels, to very ductile austenitic steels. Submerged arc, shielded metal arc, and tungsten-inert gas weldments in the as-deposited condition were tested to determine fracture behavior, tensile properties, and Charpy toughness. Comparisons were made of test results using EPRI fracture handbook solutions to evaluate the reliability of the analysis methodology. Results show that weld metal is less tough than base metal, and that recommended ASTM toughness testing procedures were inappropriate for ductile stainless steels. The study gave direction to a revision for flaw evaluation of flux weldments in IWB-3640 of Section XI of the ASME Code.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (USA)
- OSTI ID:
- 7038196
- Report Number(s):
- EPRI-NP-4768; ON: TI87920136
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AUSTENITIC STEELS
BWR TYPE REACTORS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CONTAINERS
CORROSION
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
CRACKS
FERRITIC STEELS
FRACTURE MECHANICS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS
MECHANICS
PIPES
PRESSURE VESSELS
REACTOR MATERIALS
REACTORS
STAINLESS STEELS
STEELS
STRESS CORROSION
WATER COOLED REACTORS
WATER MODERATED REACTORS
WELDED JOINTS