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Evaluation of resistance to corrosion cracking of irradiated austenitic chromium-nickel steels by impact bending tests on miniature specimens
https://doi.org/10.22349/1994-6716-2020-102-2-200-215
Abstract
In this work, we present results of a bending test of miniature specimens made of chromium-nickel stainless austenitic steels of grades 321 (08Kh18N10T), 316 (06Kh16N11M3) and 304 (02Kh18N9) irradiated to various damage doses from 4 to 125 dpa in different energy neutron spectra. Effects of the damage dose and the neutron energy spectrum on the intergranular fracture energy, which determines the strength of grain boundaries, are studied. Two neutron spectra are considered: one characteristic of the active zone of PWR and WWER reactors, and the other is typical for the active zone of fast core reactors. The relationship between the resistance to corrosion cracking of irradiated chromium-nickel steels 321, 316 and 304 and the strength of grain boundaries is considered.
Keywords
austenitic chromium-nickel steels,
stress corrosion cracking,
miniature specimens,
impact bending tests
Supporting agencies: This work was carried out within the framework of collaboration with the Material Ageing Institute under the project “Vessel Internal Project VIP 1” (project “Pressure Vessel Internal”).
About the Authors
B. Z. Margolin
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Dr Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
N. E. Pirogova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
A. A. Sorokin
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
A. M. Morozov
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
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Review
For citations:
Margolin B.Z., Pirogova N.E., Sorokin A.A., Morozov A.M. Evaluation of resistance to corrosion cracking of irradiated austenitic chromium-nickel steels by impact bending tests on miniature specimens. Voprosy Materialovedeniya. 2020;(2(102)):200-215. (In Russ.) https://doi.org/10.22349/1994-6716-2020-102-2-200-215
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