Use of Local Approach for Prediction of the Irradiation Effect on Fracture Toughness of Pressure Vessel Steel

Abstract:

Possibility of use of Local Approach (LA) to prediction of the effect of neutron irradiation on the fracture toughness of pressure vessel steel is discussed. The fundamental of new version of LA to fracture is briefly stated. Specific feature of this version of LA is that Weibull distribution is not used for description of distribution function of fracture probability. Probability of fracture is estimated by modeling of regularities of the crack nucleus formation and instability in polycrystal. Findings on simulation of fracture of reactor pressure vessel steel 2Cr-Mo-V in initial and irradiated states are presented.

• Periodical: Key Engineering Materials (Volume 465)
• Pages: 568-573
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.465.568
• Online since: January 2011
• Authors: Sergiy Kotrechko, Sergii Mamedov, Ivo Dlouhý, Vladislav Kozák
• Keywords: Beremin Model, Cleavage Fracture, Local Approach, Local Criterion, RPV Steel

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