Composite model of microstructural evolution in austenitic stainless steel under fast neutron irradiation
A rate-theory-based model has been developed which includes the simultaneous evolution of the dislocation and cavity components of the microstructure of irradiated austenitic stainless steels. Previous work has generally focused on developing models for void swelling while neglecting the time dependence of the dislocation structure. These models have broadened our understanding of the physical processes that give rise to swelling, e.g., the role of helium and void formation from critically-sized bubbles. That work has also demonstrated some predictive capability by successful calibration to fit the results of fast reactor swelling data. However, considerable uncertainty about the values of key parameters in these models limits their usefulness as predictive tools. Hence the use of such models to extrapolate fission reactor swelling data to fusion reactor conditions is compromised.
- Research Organization:
- Oak Ridge National Lab., TN (USA). Metals and Ceramics Div.; California Univ., Santa Barbara (USA)
- DOE Contract Number:
- AC05-84OR21400; AA03-76SF00034
- OSTI ID:
- 5192638
- Report Number(s):
- CONF-860605-28; ON: DE87000018
- Resource Relation:
- Conference: 13. international symposium on the effects of radiation on materials, Seattle, WA, USA, 23 Jun 1986; Other Information: Portions of this document 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
MICROSTRUCTURE
STAINLESS STEELS
MATHEMATICAL MODELS
NEUTRON REACTIONS
SWELLING
THERMONUCLEAR REACTOR MATERIALS
VOIDS
ALLOYS
BARYON REACTIONS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
HADRON REACTIONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
STEELS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
700209 - Fusion Power Plant Technology- Component Development & Materials Testing