Micro-tensile testing of the bond line in hot isostatic pressed aluminum

Considerable effort is being devoted to development and regulatory qualification of low enriched fuels for research and test reactors by many agencies worldwide. One promising fuel configuration being examined for United States higher power research and test reactors (USHPRRs) are plate-type fuels c...

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Bibliographic Details
Published in:Journal of nuclear materials 2022-04, Vol.561, p.153532, Article 153532
Main Authors: Frazer, D., Teng, F., Murray, D., Pomo, A., Winston, A., Cole, J.I., Jue, J.F., Giglio, J.
Format: Article
Language:English
Subjects:
Aluminum
Aluminum alloys
Aluminum base alloys
Clad metals
Cladding
Deformation
Enriched fuel reactors
Evaluation
Foils
Fuels
Hot isostatic pressing
Irradiation
Mechanical properties
Mechanical tests
Micro-tensile testing
Molybdenum
NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Nuclear fuels
Post irradiation examination
Radiation
Reactors
Room temperature
Strain rate
Tensile tests
Uranium
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Summary:Considerable effort is being devoted to development and regulatory qualification of low enriched fuels for research and test reactors by many agencies worldwide. One promising fuel configuration being examined for United States higher power research and test reactors (USHPRRs) are plate-type fuels composed of a metallic uranium-molybdenum foil clad in an aluminum alloy. The two pieces of aluminum alloy cladding are bonded using a hot isostatic pressing method. The mechanical properties of the resulting bond line in the aluminum alloy cladding will vary by the HIP'ing parameters, requiring a need to characterize the bond line. Small scale mechanical testing can provide a path for evaluating the mechanical properties and deformation behavior of the bond line both prior to and following irradiation. In this research, room temperature micro-tensile specimens of non-irradiated and irradiated samples containing an Al alloy (AA 6061) bond line were tested to evaluate its strength and deformation behavior. Observations indicated that the strain rate did not affect the deformation behavior or strength and most of the micro-tensile specimens failed in a ductile mode in grains around the bond line. There was no indication that the microstructural features from the bond line affected the mechanical properties of the micro-tensile specimens. An initial examination was performed on irradiated material but further systematic studies of the effects of irradiation can be performed in the future.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2022.153532