Neuronet analysis of the effect of alloying elements on the radiation embrittlement of VVÉR-440 vessel materials

The results of a neuronet simulation of the shift of the temperature of a ductile-brittle transition of VVÉR-440 vessel materials as a function of the neutron fluence and chemical composition are presented. Existing data on the temperature shift of the ductile-brittle transition in control samples o...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2006-11, Vol.101 (5), p.809-815
Main Authors: OBRAZTSOV, S. M, BIRZHEVOI, G. A, KONOBEEV, Yu. V, PECHENKIN, V. A, RACHKOV, V. I
Format: Article
Language:English
Subjects:
Alloys
Nuclear power plants
Radiation
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Summary:The results of a neuronet simulation of the shift of the temperature of a ductile-brittle transition of VVÉR-440 vessel materials as a function of the neutron fluence and chemical composition are presented. Existing data on the temperature shift of the ductile-brittle transition in control samples of the main metal and the weld-seam material in VVÉR-440 vessels from different units of an operating nuclear power plant are used for model development. The model is used to determine the character and degree of influence of various alloying elements on the radiation embrittlement of vessel steel. The dependence of the shift of the temperature of the ductile-brittle transition on the neutron fluence is estimated.[PUBLICATION ABSTRACT]
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-006-0173-6