Internal Stress Analysis for the Damage Study of a 16MND5 Bainitic Steel
Article dans une revue avec comité de lecture
Auteur
INAL, KarimBERVEILLER, MarcelLEBRUN, Jean-Lou 
PESCI, RaphaëlRésumé
The behavior and the fracture mechanisms of the 16MND5 bainitic pressure vessel steel are studied using a local approach of fracture on a crystallographic scale. A series of tensile tests are performed on the material at various temperatures ranging from - 96°C to -60°C: the damage is observed with a Scanning Electron Microscope (SEM) while the residual stresses in the ferritic phase are determined by using the X-Ray Diffraction (XRD), never exceeding -150 MPa in compression. Thanks to these measurements, each stress value can be associated with a microscopie observation in order to couple the behavior of the material with the damage at various temperatures.
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Article dans une revue avec comité de lecture; ; ; ;PESCI, Raphaël (Wiley-Blackwell, 2006)
Stress analyses by X-ray diffraction are performed on a cast duplex (32% ferrite) stainless steel elbow and a bainitic (95% ferrite) pressure vessel steel. During an in situ tensile test, micrographic observations are made ...
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Article dans une revue avec comité de lecture; ; ;PESCI, Raphaël (Elsevier, 2003)
La nature biphasée de l’acier bainitique 16MND5 (ferrite/cémentite) fait de la Diffraction des Rayons X (DRX) l’outil privilégié pour déterminer les états de contrainte dans la phase ferritique (méthode des sin2 ψ). Couplés ...
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Article dans une revue avec comité de lecture; ; ; ;BERVEILLER, Sophie; PESCI, Raphaël (Trans Tech Publications Inc, 2006)
A Kossel microdiffraction experimental set up is under development inside a Scanning Electron Microscope (SEM) in order to determine the crystallographic orientation as well as the inter- and intragranular strains and ...
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Conférence invitée; ; ; ;PESCI, Raphaël (2005)
A specific in-situ tensile device has been set up in an X-Ray diffractometer. Stress can be measured at low temperature during loading in the baintic steel and in the ferritic phase. A two-scale modeling has been proposed ...
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Conférence invitée; ;PESCI, Raphaël (Jacques Besson, Dominique Moinereau, Dirk Steglich, 2006)
A series of in-situ tensile tests was performed at various low temperatures to characterize the mechanical properties and the fracture processes of the 16MND5 steel: the damage was observed with a SEM and the internal ...