Investigation of irradiated metal of WWER-type reactor internals after 45 years of operation. Part 3. Microstructure and phase composition-Reference-Cited by-同舟云学术

Investigation of irradiated metal of WWER-type reactor internals after 45 years of operation. Part 3. Microstructure and phase composition

Published:2020-11-30 Issue:3(103) Volume: Page:157-180
ISSN:1994-6716
Container-title:Voprosy Materialovedeniya
language:
Short-container-title:Vopr. materialoved.

Author:

Kuleshova E. A.¹,Fedotova S. V.²,Gurovich B. A.²,Frolov A. S.²,Maltsev D. A.²,Margolin B. Z.³,Minkin A. J.³,Sorokin A. A.³

Affiliation:

1. NRC “Kurchatov Institute”; NRNU “MEPhI”

2. NRC “Kurchatov Institute”

3. NRC “Kurchatov Institute” – CRISM “Prometey”

Abstract

TEM, SEM, and APT techniques have been used to analyze radiation-induced components of metal structure of fragments cut from the pressure vessel internals of Novovoronezh NPP Unit No 3 after 45 years of operation. The fragments differed in the neutron damaging doses (from 14 to 43 dpa) and the irradiation temperature (from 285 to 315°C). The density and dimensions of titanium carbides and carbonitrides, dislocation loops, radiation-induced voids, segregations, and nanoscale precipitates were determined. The contributions of structural components to the radiation hardening of the investigated fragments of 18Cr-10Ni-Ti stainless steel were estimated.

Publisher

FSUE CRISM Prometey

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