SYMPOSIA PAPER Published: 01 January 1996
STP16476S

Mitigation of Irradiation Embrittlement by Annealing

Source

The main results of a complex investigation carried out in Russia of post irradiation annealing and reembrittlement of WWER-440 reactor pressure vessel materials are presented. The dependence of the Charpy transition temperature recovery on annealing temperature and fluence was established. Charpy specimens were reirradiated after annealing at 340, 380, 420, and 460°C. Experimental values of the Charpy transition temperature after reirradiation are compared to that predicted by three methods. At annealing temperatures equal to or above 420°C, results of the analysis indicate that, of the methods investigated, the “lateral shift” method gives the best result for estimating the transition temperature shift due to reirradiation.

Author Information

Amayev, AD
RNRC Kurchatov Institute, Moscow, Russia
Kryukov, AM
RNRC Kurchatov Institute, Moscow, Russia
Levit, VI
RNRC Kurchatov Institute, Moscow, Russia
Platonov, PA
RNRC Kurchatov Institute, Moscow, Russia
Sokolov, MA
Oak Ridge National Laboratory, Oak Ridge, TN
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Details
Developed by Committee: E10
Pages: 232–247
DOI: 10.1520/STP16476S
ISBN-EB: 978-0-8031-5328-8
ISBN-13: 978-0-8031-2016-7