Results of irradiated cladding tests and clad plate experiments
Two aspects critical to the fracture behavior of three-wire stainless steel cladding were investigated by the Heavy-Section Steel Technology (HSST) Program: (1) radiation effects on cladding strength and toughness, and (2) the response of mechanically loaded, flawed structures in the presence of cladding (clad plate experiments). Postirradiation testing results show that, in the test temperature range from /minus/125 to 288/degree/C, the yield strength increased, and ductility insignificantly increased, while there was almost no change in ultimate tensile strength. All cladding exhibited ductile-to-brittle transition behavior during Charpy impact testing. Radiation damage decreased the Charpy upper-shelf energy by 15 to 20% and resulted in up to 28/degree/C shifts of the Charpy impact transition temperature. Results of irradiated 12.5-mm-thick compact specimens (0.5TCS) show consistent decreases in the ductile fracture toughness, J/sub Ic/, and the tearing modulus. Results from clad plate tests have shown that (1) a tough surface layer composed of cladding and/or heat-affected zone has arrested running flaws under conditions where unclad plates have ruptured, and (2) the residual load-bearing capacity of clad plates with large subclad flaws significantly exceeded that of an unclad plate. 13 figs., 1 tab.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6573134
- Report Number(s):
- CONF-8810155-24; ON: DE89004187; TRN: 89-002062
- Resource Relation:
- Conference: 16. water reactor safety information meeting, Gaithersburg, MD, USA, 24 Oct 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
FUEL CANS
MECHANICAL PROPERTIES
RADIATION EFFECTS
NUCLEAR POWER PLANTS
PRESSURE VESSELS
STAINLESS STEELS
CHARPY TEST
IRRADIATION
POST-IRRADIATION EXAMINATION
ALLOYS
CONTAINERS
DESTRUCTIVE TESTING
HIGH ALLOY STEELS
IMPACT TESTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL TESTS
NUCLEAR FACILITIES
POWER PLANTS
STEELS
TESTING
THERMAL POWER PLANTS
220200* - Nuclear Reactor Technology- Components & Accessories
220300 - Nuclear Reactor Technology- Fuel Elements
360103 - Metals & Alloys- Mechanical Properties
360106 - Metals & Alloys- Radiation Effects