Structural-phase state and creep of mixed nitride fuel

By the analysis of thermal creep data in conjunction with structural-phase state the most likely mechanisms of UN creep are considered. An equation relating the thermal and radiation creep of nitride fuel with such important parameters as plutonium content, porosity, grain size, the content of impur...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-04, Vol.130 (1), p.12030-12035
Main Authors: Konovalov, I I, Tarasov, B A, Glagovsky, E M
Format: Article
Language:English
Subjects:
Carbon content
Creep (materials)
Fuels
Grain size
Materials science
Mathematical analysis
Nitrides
Nuclear fuels
Parameters
Plutonium
Radiation
Reactors
Transition metals
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Summary:By the analysis of thermal creep data in conjunction with structural-phase state the most likely mechanisms of UN creep are considered. An equation relating the thermal and radiation creep of nitride fuel with such important parameters as plutonium content, porosity, grain size, the content of impurities of transition metals and oxygen, the carbon content has been suggested. At stationary operating parameters in reactor the creep of nitride fuel with technical purity is defined by the thermal component at mechanism of intergranular slip and by the radiation component, which plays a significant role at temperatures below 1100°C. Both types of creep in a first approximation have a linear dependence on the stress.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/130/1/012030