1st European Mechanics of Materials Conference on Local Approach to Fracture '86 - 96'
J. Phys. IV France 06 (1996) C6-279-C6-286
Local Approach of the Charpy Test at Low TemperatureA. Rossoll1, M. Tahar2, C. Berdin1, R. Piques2, P. Forget3, C. Prioul1 and B. Marini3
1 Ecole Centrale de Paris, Laboratoire MSS-MAT, URA 850 du CNRS, Grande Voie des Vignes, 92295 Châtenay-Malabry cedex, France
2 Ecole des Mines de Paris, Centre des Matériaux, URA 866 du CNRS, BP. 87, 91003 Evry cedex, France
3 CEA Saclay, CEREM, SRMA, 91191 Gif-sur-Yvette cedex, France
Charpy V-notch impact testing is widely used in the toughness assessment of large forged components, e.g. the pressure vessel for pressurised water reactors (PWR). At low temperature, A508 Cl.3 nuclear pressure vessel steel fails by cleavage fracture. The results reported here are part of both an experimental program and numerical investigations which aim at the establishment of a non-empirical relationship between the lower shelf Charpy V-notch energy, CVN, and the fracture toughness, KIc, of this material. Here, the applicability of the Beremin cleavage fracture model to the Charpy specimen is demonstrated.
© EDP Sciences 1996