Fracture behaviour of a Fe–22Mn–0.6C–0.2V austenitic TWIP steel
| Autor: | Philippe Cugy, Anne-Françoise Gourgues-Lorenzon, Jacques Besson, Matthieu Mazière, Julie Lorthios, Xavier Lemoine |
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| Přispěvatelé: | Centre des Matériaux (MAT), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), ArcelorMittal Maizières Research SA, ArcelorMittal |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
ductile fracture Mechanical Engineering Stress–strain curve Constitutive equation Metallurgy Twip forming limit diagram Plasticity Condensed Matter Physics Shear (sheet metal) Forming limit diagram Mechanics of Materials Fracture (geology) [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] General Materials Science Composite material Hydrostatic stress Plastic yield anisotropy TWIP steels anisotropic fracture criterion Civil and Structural Engineering |
| Zdroj: | International Journal of Mechanical Sciences International Journal of Mechanical Sciences, Elsevier, 2015, 101-102, pp.99-113. ⟨10.1016/j.ijmecsci.2015.07.029⟩ |
| ISSN: | 0020-7403 |
| DOI: | 10.1016/j.ijmecsci.2015.07.029⟩ |
| Popis: | International audience; The mechanical behaviour of a 22Mn-0.6C-0.2V austenitic TWIP steel has been extensively characterised for a variety of strain ratios (from shear to biaxial stretching) using smooth and notched specimens. A constitutive model involving a non-isotropic yield function together with isotropic and/or kinematic hardening satisfactorily represented the experimental database. It was used to estimate local stress and strain fields and to derive a fracture criterion based on the equivalent stress and Lode angle that were expressed to be consistent with the constitutive equations describing the plastic flow behaviour. A weak dependence on hydrostatic stress further improves prediction of fracture initiation, with an average standard error of less than 5% over ten different mechanical tests. |
| Databáze: | OpenAIRE |
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