Swelling and swelling resistance possibilities of austenitic stainless steels in fusion reactors
Fusion reactor helium generation rates in stainless steels are intermediate to those found in EBR-II and HFIR, and swelling in fusion reactors may differ from the fission swelling behavior. Advanced titanium-modified austenitic stainless steels exhibit much better void swelling resistance than AISI 316 under EBR-II (up to approx. 120 dpa) and HFIR (up to approx. 44 dpa) irradiations. The stability of fine titanium carbide (MC) precipitates plays an important role in void swelling resistance for the cold-worked titanium-modified steels irradiated in EBR-II. Futhermore, increased helium generation in these steels can (a) suppress void conversion, (b) suppress radiation-induced solute segregation (RIS), and (c) stabilize fine MC particles, if sufficient bubble nucleation occurs early in the irradation. The combined effects of helium-enhanced MC stability and helium-suppressed RIS suggest better void swelling resistance in these steels for fusion service than under EBR-II irradiation.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6768539
- Report Number(s):
- CONF-830942-87; ON: DE85001261
- Resource Relation:
- Conference: 3. topical meeting on fusion reactor materials, Albuquerque, NM, USA, 19 Sep 1983; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AUSTENITIC STEELS
SWELLING
STAINLESS STEEL-316
HELIUM
NEUTRON REACTIONS
PHYSICAL RADIATION EFFECTS
TITANIUM CARBIDES
VOIDS
ALLOYS
BARYON REACTIONS
CARBIDES
CARBON COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTS
FLUIDS
GASES
HADRON REACTIONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
RADIATION EFFECTS
RARE GASES
STAINLESS STEELS
STEELS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360106* - Metals & Alloys- Radiation Effects
700209 - Fusion Power Plant Technology- Component Development & Materials Testing