Swelling, microstructural development and helium effects in type 316 stainless steel irradiated in HFIR and EBR-II
This work examines the swelling and microstructural development of a single heat of 20%-cold-worked type 316 stainless steel irradiated to produce displacement damage and a high, continuous helium generation rate, in the High Flux Isotope Reactor (HFIR). Similar irradiation of the same heat of steel in the Experimental Breeder Reactor (EBR)-II is used as a base line for comparing displacement damage accompanying a very low continuous helium generation rate. At temperatures above and below the void swelling regime (approx. 350 to 625/sup 0/C) swelling is greater in HFIR than in EBR-II. In the temprature range of 350 to 625/sup 0/C, cavity formation, precipitation and dislocation recovery are both enhanced and accelerated in HFIR, often causing swelling at lower dose than in EBR-II. In HFIR, however, cavities appear to be bubbles rather than voids. They are about 10 times smaller and 20 to 50 times more numerous than voids in EBR-II. Thus, the swelling becomes greater in EBR-II than in HFIR for 20%-CW 316 in the void swelling temperature ranges as fluence increases. Such differences in swelling and microstructural behavior must be understood in order to anticipate the behavior of materials during fusion irradiation.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6303591
- Report Number(s):
- CONF-810831-29; ON: DE81028603; TRN: 81-015221
- Resource Relation:
- Conference: Fusion reactor materials meeting, Seattle, WA, USA, 9 Aug 1981
- Country of Publication:
- United States
- Language:
- English
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Comparison of the swelling and the microstructural/microchemical evolution of AISI 316 irradiated in EBR-II and HFIR
Microstructural and microchemical comparisons of AISI 316 irradiated in HFIR and EBR-II
Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
STAINLESS STEEL-316
PHYSICAL RADIATION EFFECTS
SWELLING
HIGH TEMPERATURE
MICROSTRUCTURE
NEUTRON REACTIONS
ALLOYS
BARYON REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
HADRON REACTIONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NUCLEAR REACTIONS
NUCLEON REACTIONS
RADIATION EFFECTS
STAINLESS STEELS
STEELS
360106* - Metals & Alloys- Radiation Effects
360103 - Metals & Alloys- Mechanical Properties
700209 - Fusion Power Plant Technology- Component Development & Materials Testing