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Bertolino, G.; Sauzay, M.; Bertolino, G.; Doquet, V.
CEA Saclay, Dept. des Materiaux pour le Nucleaire, DMN, 91 - Gif-sur-Yvette (France)2003
CEA Saclay, Dept. des Materiaux pour le Nucleaire, DMN, 91 - Gif-sur-Yvette (France)2003
AbstractAbstract
[en] An attempt to model the variability of short cracks development in high-cycle fatigue is made by coupling finite element calculations of the stresses ahead of a microcrack in a polycrystal with simulations of crack growth along slip planes based on discrete dislocations dynamics. The model predicts a large scatter in growth rates related to the roughness of the crack path. It also describes the influence of the mean grain size and the fact that overloads may suppress the endurance limit by allowing arrested cracks to cross the grain boundaries. (authors)
Original Title
Propagation crystallographique des fissures de fatigue dans un polycristal. Simulations basees sur les elements finis et la dynamique des dislocations discretes
Primary Subject
Source
2003; 7 p; 9. international conference on the mechanical behaviour of materials; Geneva (Switzerland); 25-29 May 2003; 8 refs.
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
ALLOYS, AUSTENITIC STEELS, CALCULATION METHODS, CARBON ADDITIONS, CHROMIUM ALLOYS, CHROMIUM STEELS, CHROMIUM-MOLYBDENUM STEELS, CHROMIUM-NICKEL STEELS, CHROMIUM-NICKEL-MOLYBDENUM STEELS, CORROSION RESISTANT ALLOYS, CRYSTAL DEFECTS, CRYSTAL STRUCTURE, CRYSTALS, HEAT RESISTANT MATERIALS, HEAT RESISTING ALLOYS, HIGH ALLOY STEELS, IRON ALLOYS, IRON BASE ALLOYS, LINE DEFECTS, LOW CARBON-HIGH ALLOY STEELS, MATERIALS, MATHEMATICAL SOLUTIONS, MECHANICAL PROPERTIES, MICROSTRUCTURE, MOLYBDENUM ALLOYS, NICKEL ALLOYS, NUMERICAL SOLUTION, SIMULATION, SIZE, STAINLESS STEELS, STEEL-CR17NI12MO3-L, STEELS, TRANSITION ELEMENT ALLOYS
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