Development of microstructural features during irradiation
During elevated temperature irradiation with energetic neutrons, ions or electrons, the microstructure of alloys undergoes significant changes accompanied by corresponding changes in physical properties. The microstructural development is caused by the defect production throughout the material and the concurrent annihilation of the mobile point defects and small defect clusters on spatially discrete sinks such as dislocations, grain boundaries and voids. We review here the present understanding of the development of the radiation microstructure beyond the nucleation stage of stable defect clusters. After a short characterization of the dynamic state of a crystalline material during elevated temperature irradiation we discuss (a) the void swelling phenomenon; (b) radiation-enhanced, diffusion controlled processes such as precipitate coarsening; and (c) radiation-induced processes such as radiation-induced precipitation and spatial redistribution of phases in multiphase alloys.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5649332
- Report Number(s):
- CONF-800205-10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
BARYONS
CHALCOGENIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTARY PARTICLES
FERMIONS
GRAIN BOUNDARIES
HADRONS
MICROSTRUCTURE
NEUTRONS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NICKEL COMPOUNDS
NICKEL SILICIDES
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
NUCLEONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
RADIATION EFFECTS
SILICIDES
SILICON COMPOUNDS
SWELLING
TITANIUM ALLOYS
TITANIUM BASE ALLOYS
TRANSITION ELEMENT COMPOUNDS
VOIDS