Analysis of embrittlement of WWER-1000 RPV materials

Analysis of embrittlement for WWER-1000 RPV materials is performed on the basis of available and original experimental data. Contributions of thermal aging and neutron irradiation to embrittlement are considered for base and weld metals. Equations have been obtained for the shift of the critical tem...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 2012, Vol.89, p.178-186
Main Authors: Margolin, B.Z., Nikolayev, V.A., Yurchenko, E.V., Nikolayev, Yu.A., Erak, D.Yu, Nikolayeva, A.V.
Format: Article
Language:English
Subjects:
Alloying elements
Embrittlement
Mathematical analysis
Neutron irradiation
Nickel
Piping
Pressure vessels
Radiation damage
Radiation embrittlement
Silicon
Thermal aging
Weld metal
WWER-1000 reactor
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Summary:Analysis of embrittlement for WWER-1000 RPV materials is performed on the basis of available and original experimental data. Contributions of thermal aging and neutron irradiation to embrittlement are considered for base and weld metals. Equations have been obtained for the shift of the critical temperature of brittleness as a function of irradiation time and neutron fluence. For weld metal with high nickel content the dependence of the radiation embrittlement coefficient on the content of alloying elements affecting material embrittlement such as nickel, manganese and silicon has been obtained.
ISSN:0308-0161
1879-3541
DOI:10.1016/j.ijpvp.2011.11.003