Papel fundamental de la triaxialidad generada por defectos de tipo entalla en la fractura anisótropa de aceros perlíticos trefilados
- 1 Grupo de Investigación en Fractura e Integridad Estructural (GIFIE), Universidad de Salamanca (USAL)
ISSN: 2792-4246
Any de publicació: 2022
Número: 3
Pàgines: 63-67
Tipus: Article
Altres publicacions en: Revista española de mecánica de la fractura
Resum
This paper studies the influence of stress triaxility generated by notch-like defects on the anisotropic fracture of cold drawn pearlitic steels that exhibit microstructural orientation (anisotropy) as a consequence of the manufacturing process by means of progressive cold drawing (strain hardening). In addition to the own microstructural architecture (orientation), a sufficient level of stress triaxiality (constraint) in the notched specimens is required to obtain the aforesaid anisotropic fracture behaviour (associated with cracking/fracture path deflection and mixed mode propagation) and to avoid the otherwise isotropic fracture behaviour appearing for low stress triaxiality (constraint) levels in spite of the oriented microstructure.