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Academic literature on the topic 'Aciers inoxydables austéno-ferritiques'
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Journal articles on the topic "Aciers inoxydables austéno-ferritiques"
Desestret, A., and Vl Cihal. "Pour la synthèse de l’urée : des aciers inoxydables spéciaux austénitiques et austéno-ferritiques." Matériaux & Techniques 85 (1997): 47–54. http://dx.doi.org/10.1051/mattech/199785070047s.
Full textMasson, S. H., J. P. Massoud, Y. Meyzaud, and P. Ould. "Prévision du vieillissement en service des composants en aciers inoxydables austéno-ferritiques moulés." Revue de Métallurgie 90, no. 9 (September 1993): 1083. http://dx.doi.org/10.1051/metal/199390091083.
Full textChauveau, E., and D. Aubry. "Les aciers inoxydables austéno-ferritiques en fils et barres et leur utilisation dans l’industrie de l’eau." Techniques Sciences Méthodes, no. 6 (2008): 65–72. http://dx.doi.org/10.1051/tsm/200806065.
Full textDissertations / Theses on the topic "Aciers inoxydables austéno-ferritiques"
Baumhauer, Christophe. "Influence du niobium sur la microstructure et les propriétés d'usage des aciers inoxydables austéno-ferritiques (duplex)." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENI087/document.
Full textStainless steels are used in some industries requiring mechanicalproperties and corrosion resistance. Lean duplex have higher corrosionresistance and mechanical properties than the austenitic stainless steels.However, their machinability is below that of the corresponding austeniticstainless steels. To improve it, some elements can be added in thegrade, like niobium. The aim of this study is to increase machinability oflean duplex grades without degrading their other properties. Differentcontents of niobium were tested in a 1.4362 to understand how thiselement affects the microstructure, the toughness and the pittingcorrosion resistance. With these results optimum niobium content isdefined. Turning and toughness experiments were done on industrial1.4362 grades with and without niobium and with different heatstreatments in order to understand how niobium can influence theseproperties
Mary, Nicolas. "Influence des contraintes résiduelles sur la corrosion par piqûres des aciers inoxydables austéno-ferritiques : approche mécanique et électrochimique à l'échelle locale." Dijon, 2004. http://www.theses.fr/2004DIJOS058.
Full textBadyka, Romain. "Influence des éléments d'alliage sur la cinétique de vieillissement de la ferrite d'aciers inoxydables austéno-ferritiques moulés." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR072/document.
Full textCast austenitic-ferritic stainless steels are used in primary circuit of 2nd generation nuclearpower plants. At operating temperature (285 °C - 325 °C), evolution of mechanical properties isobserved due to the phase transformations occurring within the ferrite: spinodal decomposition (SD)leading to the formation on a Fe rich phase (α) and a Cr rich phase (α ') and the precipitation of the G-phase at α/α' interfaces. This evolution of the mechanical properties can be prohibitive for thecomponents. If it is well known that the steel composition plays an important role on the evolution ofthe properties (steels less rich in Ni and Mo are less sensitive to aging), the role of solute elements asNi, Mo and Mn on the aging kinetics is not yet known so as the contribution of the G-phase on thehardening during the thermal aging. In this study, the aging kinetics of the ferrite of some austenitic-ferritic stainless steels with or without Mo and model alloys with tuned compositions have been studied by atom probe tomography (APT) and by micro hardness measurements. This works answered the three following questions: - Quantification of the contribution of both spinodal decomposition and G-phase precipitation on hardening of the ferrite: combination of hardening models and data obtained with APT permitted to show that G-phase precipitation is clearly the main contributor to ferrite hardness increase at early stage of ageing in Mo-bearing steels. This is due to the high number density of G-phase particles. In Mo-free steels which have ten times less G-phase particles, contributions of both spinodal decomposition and G-phase precipitation are similar. In both cases, when coarsening of G-phase particles occurs and SD is well developed, SD contribution becomes larger. - Influence of Ni, Mo and Mn on aging kinetics: The study of model alloys with tuned composition has shown that only Ni plays a role on SD by enhancing the decomposition. Mn is a key element for the precipitation of G-phase particles at α/α' interfaces. - Efficiency of regeneration heat treatment at 550 °C: an alternative to component replacement is to perform a heat treatment at higher temperature in order to restore the properties of the components. The heat treatments performed permitted to entirely restore the mechanical properties of Mo free steels and partially the properties of Mo bearing ones. This is due to the presence of undissolved G-phase particles in the case of Mo bearing alloys. In each case, SD was totally dissolved
Khedim, Brahim. "Simulations expérimentales du comportement de films passifs sous sollicitations physiques et chimiques : application à l'analyse des mécanismes de fissuration des aciers inoxydables austéno-ferritiques." Dijon, 1992. http://www.theses.fr/1992DIJOS044.
Full textBouillot, Claude. "Etude phénoménologique de la fissuration des aciers inoxydables austéno-ferritiques en milieu chlorure et sature en H2S. Apport de la spectroscopie de masse d'ions secondaires (SIMS) à l'analyse chimique de la distribution de l'hydrogène en fonction de la microstructure." Dijon, 1994. http://www.theses.fr/1994DIJOS075.
Full textSrisrual, Anusara. "Caractérisation photoélectrochimique d'oxydes thermiques développés sur métaux et alliages modèles." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENI012/document.
Full textHigh Temperature Corrosion (HTC), in various and severe atmospheres, of continually more elaborated (composition, micro–structure) metallic alloys, is a rather complex industrial and scientific topic. PhotoElectroChemistry (PEC) acquired a special place in the characterization of physico–chemical and electronic properties of the highly heterogeneous oxidation layers formed in HTC. Through studies of model but industrially representative samples (duplex stainless steel, Ni–base alloy 690), this work presents the development and validation of an experimental set–up allowing for the first time to use the whole set of PEC techniques at the mesoscopic level (typically 30 µm), as well as the validation of an original model of photocurrent energy spectra, developed at SIMaP, allowing to well describe, and accurately fit the latter spectra, and thus yielding, notably, precise bandgap values for the semiconducting components of the thermal scale
Martin, Guilhem. "Hot workability of duplex stainless steels." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00721764.
Full textJoly, Pierre. "Etude de la rupture d'aciers inoxydables austéno-ferritiques moulés, fragilisés par vieillissement à 400°C." Phd thesis, École Nationale Supérieure des Mines de Paris, 1992. http://pastel.archives-ouvertes.fr/pastel-00915898.
Full textSeddouki, Abbass. "Endommagement en fatigue plastique oligocyclique à température ambiante d'aciers inoxydables duplex austéno-ferritiques type Z2 CND 22-05 alliés à l'azote." Lille 1, 1994. http://www.theses.fr/1994LIL10093.
Full textHédin, Marc. "Sensibilité aux conditions initiales de l'évolution microstructurale de la ferrite d'aciers austéno-ferritiques vieillis dans le domaine 300-400°C." Rouen, 1998. http://www.theses.fr/1998ROUES080.
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