The effects of thermal annealing on fracture toughness of low upper-shelf welds
- Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.
Experimental results are presented from a study of the effects of thermal annealing on recovery of fracture toughness of low upper-shelf submerged-arc welds (weld designations 61W through 67W) from the Heavy-Section Steel Irradiation (HSSI) Program Second and Third Irradiation Series. Most of the study was conducted to evaluate the effects of annealing on the J-R curves of the submerged-arc welds. The recovery of fracture toughness in the transition range as the result of annealing was studied for welds 63W, 64, and 65W only. Compact specimens of 12.7- and 20.3-mm-thick (0.5T and 0.8T, respectively) were tested in this study. The specimens had been previously irradiated at the Oak Ridge National Laboratory (ORNL) Bulk Shielding Reactor. Each weld was irradiated to a certain value of neutron fluence in the range from 0.4 to 1.3 {times} 10{sup 19} neutrons/cm{sup 2} (> 1 MeV) in the average temperature range of 275 to 300 C. Annealing of the irradiated specimens was done at 454 C for 168 h. Fracture toughness tests were performed at temperatures selected to match those of the previously conducted unirradiated and irradiated tests.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 195654
- Report Number(s):
- CONF-940657-10; ON: DE96005745; TRN: AHC29605%%29
- Resource Relation:
- Conference: 17. symposium on effects of radiation on materials, Sun Valley, ID (United States), 20-23 Jun 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison of fracture toughness and Charpy impact properties recovery by thermal annealing of irradiated reactor pressure vessel steels
Effects of irradiation on initiation and crack-arrest toughness of two high-copper welds and on stainless steel cladding
Related Subjects
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS
PWR TYPE REACTORS
PRESSURE VESSELS
WELDED JOINTS
PHYSICAL RADIATION EFFECTS
MANGANESE STEELS
FRACTURE PROPERTIES
HEAT TREATMENTS
ARC WELDING
COPPER ADDITIONS
NICKEL ADDITIONS
MOLYBDENUM ADDITIONS
TRANSITION TEMPERATURE
EXPERIMENTAL DATA