SYMPOSIA PAPER Published: 01 January 1993

Investigation of Material Behavior Under Reirradiation after Annealing Using Subsize Specimens


Experimental results are presented from a study of changes in the ductile-to-brittle transition temperature of VVER-440 base and weld metals under cyclic irradiation and recovery. The transition temperatures were determined from the results of subsize V-notch impact specimens measuring 5 by 5 by 27.5 mm. Specimen irradiation was carried out in a commercial reactor at a temperature of 270°C in three irradiation and recovery cycles. Annealing of specimens was performed at 340, 420, and 460°C. The shift in the transition temperature of subsize specimen data in the first irradiation cycle was compared to the transition temperature shift determined from tests using standard Charpy specimens.

Author Information

Kryukov, AM
I. V. Kurchatov Institute of Atomic Energy, Moscow, Russia
Sokolov, MA
I. V. Kurchatov Institute of Atomic Energy, Moscow, Russia
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Developed by Committee: E10
Pages: 417–423
DOI: 10.1520/STP12745S
ISBN-EB: 978-0-8031-5250-2
ISBN-13: 978-0-8031-1869-0