SYMPOSIA PAPER Published: 01 January 2004
STP11219S

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

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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.

Author Information

Kozlov, AV
Sverdlovsk Branch of Research and Development Institute of Power Engineering, Zarechny, Sverdlovsk Region, Russia
Scherbakov, EN
Sverdlovsk Branch of Research and Development Institute of Power Engineering, Zarechny, Sverdlovsk Region, Russia
Averin, SA
Sverdlovsk Branch of Research and Development Institute of Power Engineering, Zarechny, Sverdlovsk Region, Russia
Garner, FA
Pacific Northwest National Laboratory, Richland, WA, USA
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Developed by Committee: E10
Pages: 66–77
DOI: 10.1520/STP11219S
ISBN-EB: 978-0-8031-5494-0
ISBN-13: 978-0-8031-3477-5