Fabrication of simulated plate fuel elements: Defining role of out-of-plane residual shear stress

Bond strength and microstructural developments were investigated during fabrication of simulated plate fuel elements. The study involved roll bonding of aluminum–aluminum (case A) and aluminum–aluminum+yttria (Y2O3) dispersion (case B). Case B approximated aluminum–uranium silicide (U3Si2) ‘fuel-mea...

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Published inJournal of nuclear materials Vol. 445; no. 1-3; pp. 200 - 208
Main Authors Rakesh, R., Kohli, D., Sinha, V.P., Prasad, G.J., Samajdar, I.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.02.2014
Elsevier
Subjects
Aluminum
Applied sciences
Cold rolling
Dispersion
Dispersions
Energy
Exact sciences and technology
Fuel elements
Fuels
Microstructure
Nuclear fuel elements
Nuclear fuels
Preparation and processing of nuclear fuels
Shear stress
Simulation
Yttrium oxide
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Summary:Bond strength and microstructural developments were investigated during fabrication of simulated plate fuel elements. The study involved roll bonding of aluminum–aluminum (case A) and aluminum–aluminum+yttria (Y2O3) dispersion (case B). Case B approximated aluminum–uranium silicide (U3Si2) ‘fuel-meat’ in an actual plate fuel. Samples after different stages of fabrication, hot and cold rolling, were investigated through peel and pull tests, micro-hardness, residual stresses, electron and micro-focus X-ray diffraction. Measurements revealed a clear drop in bond strength during cold rolling: an observation unique to case B. This was related to significant increase in ‘out-of-plane’ residual shear stresses near the clad/dispersion interface, and not from visible signatures of microstructural heterogeneities.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2013.11.005