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    STP1204

    Investigation of Material Behavior Under Reirradiation after Annealing Using Subsize Specimens

    Published: 0


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    Abstract

    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.

    Keywords:

    Charpy, reirradiation, annealing, ductile-to-brittle transition temperature (DBBT)


    Author Information:

    Kryukov, AM
    Deputy head of laboratory and senior researcher, I. V. Kurchatov Institute of Atomic Energy, Moscow,

    Sokolov, MA
    Deputy head of laboratory and senior researcher, I. V. Kurchatov Institute of Atomic Energy, Moscow,


    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP12745S