Influence of the microstructure and defects on the high cycle fatigue strength of 316L stainless steel under multiaxial loading
Communication avec acte
Author

206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
Date
2014Abstract
In the present study, the effects of both the microstructure and defects on the high cycle fatigue behavior of the 316L austenitic stainless steel are investigated thanks to finite element simulations of polycrystalline aggregates. The numerical analysis relies on a metallurgical and mechanical characterization. To complete the experimental study, load-controlled fatigue tests are also carried out to determine the fatigue limits at 2.106 cycles under uniaxial and multiaxial loading conditions using both smooth specimens and specimens containing an artificial hemispherical surface defect. In the finite element models, where the grain morphologies are explicitly modeled, the anisotropic behavior of each crystal is described by the generalized Hooke’s law and by a single crystal visco-plastic model. From the simulations carried out with different defect sizes and orientation sets, statistical informations regarding mesoscopic mechanical fields are analyzed. Then, using the FE results, the ability of a probabilistic fatigue criterion to predict the influence of defects and biaxiality on the average fatigue limits is evaluated thanks to a comparison with the experimental data.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureGUERCHAIS, Raphaël; ROBERT, Camille; MOREL, Franck; SAINTIER, Nicolas (Elsevier, 2014)In this work, an analysis of both the mechanical response at the grain scale and high cycle multiaxial fatigue criteria is undertaken using finite element (FE) simulations of polycrystalline aggregates. The metallic material ...
-
Article dans une revue avec comité de lectureGUERCHAIS, Raphaël; SAINTIER, Nicolas; MOREL, Franck; ROBERT, Camille (Elsevier, 2014)This study aims to analyse the influence of geometrical defects (notches and holes) on the high cycle fatigue behaviour of an electrolytic copper based on finite element simulations of 2D polycrystalline aggregates. In ...
-
Communication avec acteGUERCHAIS, Raphaël; SAINTIER, Nicolas; MOREL, Franck; ROBERT, Camille (Congrès Français de mécanique, 2013)The aim of this study is to analyse the influence of micro-notches on the fatigue behaviour of an electrolytic copper using finite element simulations of polycrystalline aggregates. In these simulations, in which the grains ...
-
Article dans une revue avec comité de lectureGUERCHAIS, Raphaël; MOREL, Franck; SAINTIER, Nicolas; ROBERT, Camille (Wiley-Blackwell, 2015)In the present study, the effects of both the microstructure and voids on the high-cycle fatigue behaviour of the 316L austenitic stainless steel are investigated by using finite element simulations of polycrystalline ...
-
Article dans une revue avec comité de lectureGUERCHAIS, Raphaël; MOREL, Franck; SAINTIER, Nicolas (Elsevier, 2017)This study aims to examine the effects of both material microstructure and voids on the high-cycle fatigue behavior of metals. To deal with this matter, finite element analyses of polycrystalline aggregates are carried ...