Transmission electron microscope study of fusion-environment radiation damage in iron and iron-chromium alloys
A transmission electron microscopy study of radiation damage microstructures in iron and iron-chromium alloys has been performed. This study consisted of both qualitative and quantitative characterization of the dislocation and cavity microstructures, including determination of vacancy/interstitial character and Burgers vectors for dislocation loops and analysis of the cavity morphology. The effects of irradiation temperature, fluence, helium implantation, and chromium content were investigated. Neutron irradiation (iron specimens, 1 dpa, 455 to 1000 K) and triple-beam ion irradiation (Fe-10% Cr specimens, 10 dpa, 725 to 950 K; Fe-10% Cr specimens, 850 K, 0.3 to 100 dpa; and Fe, Fe-5% Cr, Fe-10% Cr specimens, 850 K, 10 dpa) were employed. In the triple-beam ion irradiation procedure, simultaneous bombardment with 4 MeV Fe/sup + +/ ions and energetic He/sup +/ and D/sub 2//sup +/ ions was used to simulate the fusion environment (10 at. ppM He/dpa and 41 at. ppM D/dpa). In addition, single-beam 4 MeV Fe/sup + +/ ion irradiations of Fe-10% Cr both with and without pre-injection of helium and deuterium were performed.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5152825
- Report Number(s):
- ORNL/TM-8303; ON: DE82018525
- Resource Relation:
- Other Information: Thesis. Submitted to Univ. of Virginia, Charlottesville. Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
CHROMIUM ALLOYS
MICROSTRUCTURE
PHYSICAL RADIATION EFFECTS
IRON
IRON ALLOYS
ELECTRON MICROSCOPY
NEUTRON REACTIONS
THERMONUCLEAR REACTOR MATERIALS
ALLOYS
BARYON REACTIONS
CRYSTAL STRUCTURE
ELEMENTS
HADRON REACTIONS
MATERIALS
METALS
MICROSCOPY
NUCLEAR REACTIONS
NUCLEON REACTIONS
RADIATION EFFECTS
TRANSITION ELEMENTS
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