STP1447

    The Effect of Void Swelling on Electrical Resistance and Elastic Moduli in Austenitic Steels

    Published: Jan 2004


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    Abstract

    Measurements are presented of electrical resistance and elastic moduli (Young's modulus and shear modulus) of stabilized austenitic fuel pin cladding after irradiation in the BN-600 reactor. Additional data are presented on changes in electrical resistivity of another austenitic steel irradiated in the BN-350. The elastic moduli of both steels are reduced and the electrical resistance is increased as the neutron dose and resultant swelling increase.

    Dependencies of these changes in physical properties on neutron irradiation dose, temperature, and swelling level are plotted and it is shown that to the first order, the property changes are dependent on the swelling level, in agreement with earlier U.S. and Russian data. It is also observed, however, that changes in electrical resistance and elastic moduli frequently differ slightly for specimens with equal swelling, but which were obtained at different combinations of temperature and dose. These second-order differences appear to arise from contributions of other radiation-induced structural changes, especially in precipitation, which depends strongly on irradiation temperature in these stabilized steels.

    Keywords:

    austenitic steel, elastic moduli, electrical resistance, neutron irradiation, swelling, precipitation


    Author Information:

    Kozlov, AV
    Doctor, Head of Post-Irradiation Examination Department, Sverdlovsk Branch of Research and Development Institute of Power Engineering, Zarechny, Sverdlovsk Region

    Scherbakov, EN
    Doctor, Head of Post-Irradiation Examination Department, Sverdlovsk Branch of Research and Development Institute of Power Engineering, Zarechny, Sverdlovsk Region

    Averin, SA
    Doctor, Head of Post-Irradiation Examination Department, Sverdlovsk Branch of Research and Development Institute of Power Engineering, Zarechny, Sverdlovsk Region

    Garner, FA
    Laboratory Fellow, Pacific Northwest National Laboratory, Richland, WA


    Paper ID: STP11219S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP11219S


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