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

0355779 - ÚFM 2011 RIV CH eng J - Journal Article
Kotrechko, S. A. - Mamedov, S. - Dlouhý, Ivo - Kozák, Vladislav
Use of Local Approach for Prediction of the Irradiation Effect on Fracture Toughness of Pressure Vessel Steel.
Key Engineering Materials. Roč. 465, - (2011), s. 568-573. ISSN 1013-9826
Institutional research plan: CEZ:AV0Z20410507
Keywords : local criterion * local approach * Beremin model
Subject RIV: JL - Materials Fatigue, Friction Mechanics

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.
Permanent Link: http://hdl.handle.net/11104/0194465