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Full text (ua) Lateral expansion and impact toughness correlation of VVER-1000 reactor pressure vessel materials
O. V. Trygubenko1
1Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
Abstract: Impact toughness and lateral expansion of the irradiated surveillance specimens for VVER-1000 reactor pressure vessel have been defined using Charpy impact test. The analysis of experimental data has revealed a linear correlation of these characteristics. It was shown that a slope of the regression line is practically unchanged due to irradiation. Using the upper shelf energy test data it was also demonstrated the lateral expansion and impact toughness decrease simultaneously under the neutron irradiation.
Keywords: reactor pressure vessel, surveillance-specimens, impact toughness, lateral expansion, neutron fluence.
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2. Sreenivasan P. R. Charpy energy-lateral expansion relations for a wide range of steels. International Journal of Pressure Vessels and Piping 83 (2006) 498. https://doi.org/10.1016/j.ijpvp.2006.03.002
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