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Статті в журналах з теми "Alliages modèles à base de fer"
Buchsenschutz, Olivier, Christophe Batardy, Michel Cartereau, Katherine Gruel, and Marc Levéry. "Une base pour l’élaboration de modèles de peuplement de l’Âge du Fer en France." ArchéoSciences, no. 39 (December 31, 2015): 157–75. http://dx.doi.org/10.4000/archeosciences.4457.
Повний текст джерелаMATHON, M. H., F. MAURY, A. BARBU, N. SMETNIANSKY, N. LORENZELLI, C. H. DE NOVION, and F. BOUE. "Etude de la précipitation du cuivre sous irradiation électronique dans des alliages dilués à base de fer." Le Journal de Physique IV 04, no. C3 (February 1994): C3–193—C3–197. http://dx.doi.org/10.1051/jp4:1994327.
Повний текст джерелаCoudurien, Lucien, Didier Pique, and Nicolas Eustathopoulos. "Étude expérimentale et théorique de la mouillabilité du fer solide par des alliages de brasure à base d’argent." Journal de Chimie Physique 84 (1987): 205–7. http://dx.doi.org/10.1051/jcp/1987840205.
Повний текст джерелаBelkebir, A., and A. Kobylanski. "Lois de Comportement à chaud avec Recristallisation Dynamique. Application au cas des Alliages à Base de Fer Pur." Le Journal de Physique IV 05, no. C3 (April 1995): C3–165—C3–175. http://dx.doi.org/10.1051/jp4:1995314.
Повний текст джерелаBerthod, Patrice, Ahmed Dia, Moussa Ba, Pierre Lemoine, and Pascal Villeger. "Microstructures et duretés d’alliages ternaires de type M-30%CR-0 à 5%C contenant une quantité croissante de carbures de chrome. partie 2 : alliages à base de fer." Annales de chimie Science des Matériaux 36, no. 1 (February 28, 2011): 27–36. http://dx.doi.org/10.3166/acsm.36.27-36.
Повний текст джерелаДисертації з теми "Alliages modèles à base de fer"
Haouam, Abdallah. "Comportement en flexion 4 points à température moyenne (350-550°C) d'alliage base nickel : étude de la fissuration et du rôle de la vapeur d’eau." Compiègne, 2009. http://www.theses.fr/2009COMP1806.
Повний текст джерелаThe objective of this thesis is the determination of the behavior law of nickel based alloy Inconel 600 (NC15Fe), which is used in the steam generators of nuclear power plants, subject to intergranular corrosion process. One of the major objectives aimed by this thesis is the knowledge of synergy between oxidation and mechanical loading. The interval of temperature explored during the experimental study coverts the actual conditions for a safe operation of steam generators (350 - 550°C). The various parameters of influence such as the temperature, the atmosphere (vacuum, air, oxygen and water vapor) as well as the surface quality are explored. From the study of the oxidation kinetics, it shows from isothermal oxidation tests under synthetic air, the recorded weight gain and the oxide film thickness Cr2O3 obtained respectively by the thermo gravimetric analysis (ATG) and the spectroscopy with glow discharge (SDL) are very weak in the temperature range (350 - 800°C); showing the very low reactivity of the material in such conditions. As for the influence of the mechanical loading, the results of the 4- point bending tests carried out under secondary vacuum followed by acoustic emission on Inconel 600 samples by means of a specific assembly, revealing the absence of damage. The influence of the oxygen and the water vapor, on the other hand, shows a modification of the behavior of the material characterized by high amplitudes of acoustic signals and attenuated mechanical characteristics, meaning a corrosion attack. Using the results obtained, in-situ, under a controlled atmosphere, a viscoplastic model of behavior of Inconel 600 in 4- point bending, based on Norton’s law is proposed
STEPHAN, MAURICE. "Solidification rapide d'alliages a base fer et a base zinc. Application a l'amelioration du rendement d'un inducteur." Le Mans, 1994. http://www.theses.fr/1994LEMA1021.
Повний текст джерелаNicolas, André. "Etude de l'Evolution Physico-Chimique du Substrat lors de l'Oxydation à Haute Température des Alliages Modèle Ni-Cr à Faible Teneur en Chrome et de l'Alliage Modèle Ni-16Cr-9Fe." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2012. http://tel.archives-ouvertes.fr/tel-00848591.
Повний текст джерелаAgrizzi, Ronqueti Larissa. "Study of grain boundary oxidation of high alloyed carbon steels at coiling temperature." Thesis, Compiègne, 2018. https://bibliotheque.utc.fr/Default/doc/SYRACUSE/2018COMP2405.
Повний текст джерелаAdvanced high-strength steels (AHSS) have been widely used in automotive industry to improve safety and fuel economy. In order to reach the mechanical properties targets, these new steels are composed by much higher alloy contents (e.g. silicon and manganese) than usual steels. As consequence, the AHSS may suffer of selective internal oxidation during the cooling of hot coil. The selective internal oxidation, especially the grain boundary oxidation (GBO), is currently one of the main obstacles to the production of these steels. It reduces the number of cycles before fatigue failure and thus, makes it difficult to reach the specifications of the customer. Therefore, this PhD work was focused on the effect of several parameters on selective internal oxidation behavior. Among them, the impact of decarburization, the influence of coiling temperature and the mill scale, the effect of different silicon and/or manganese contents and their diffusion behavior. Moreover, the impact of grain boundary misorientation on grain boundary oxidation was also investigated. Either binary/ternary iron-based model alloys as well as industrial steels were investigated by a large set of experimental techniques. This analysis showed a stable decarburization for all investigated samples that does not impact the selective internal oxidation for long exposure time in isothermal conditions. The GBO depths were examined according to the different test configurations and were found dependent for some cases on silicon or manganese content. For some of them, different silicon diffusion behaviors were identified with regards to grain boundary oxidation depending on temperatures. Considering some restrictive hypotheses, the application of Wagner’s theory of selective internal oxidation allowed determining the grain boundary diffusion coefficient of oxygen. To overcome some limitations of Wagner’s model, a model of selective oxidation has been applied to understand the effect of different parameters on the penetration of oxygen inside the metal and principally on the grain boundary depth affected by selective oxidation. The knowledge acquired from this PhD work will help to understand and limit the selective internal oxidation (mainly GBO) in new steels with complex alloy compositions. Furthermore, the results may be used to assess a model of selective oxidation
Pierron-Bohnes, Véronique. "Ordre local et magnétisme dans les alliages à base de fer." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37617545m.
Повний текст джерелаPierron-Bohnes, Véronique. "Ordre local et magnetisme dans les alliages a base de fer." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13135.
Повний текст джерелаNEGRI, DANIELA. "Nanocristallisation thermique et mécanique : le cas des alliages à base de fer." Grenoble INPG, 1999. http://www.theses.fr/1999INPG0180.
Повний текст джерелаDelvat, Erwann. "Contribution au développement de nouveaux alliages biocompatibles de base de titane." Rennes, INSA, 2006. http://www.theses.fr/2006ISAR0021.
Повний текст джерелаThe aim of this work is to contribute to the design of new titanium based biomaterials with improved properties (chemical, structural, mechanical and of biocompatibility) in regard with a durable implantation in a human body. For this study, we developed titanium based alloys with high concentration of alloying element like tantalum or molybdenum (perfectly biocompatible elements) and tried to fix in the volume bioactive elements like calcium or phosphorus. Those alloys were elaborated by powder metallurgy and by semi levitation melting that permits elaboration under ultra clean conditions (no reaction with the copper crucible), what is ideal for the synthesis of high melting point biocompatible alloys. The microstructural and mechanical properties of these alloys were carried by differents techniques as optical microscopy, SEM (pictures and spectroscopy), XRD, EPMA, Vickers hardness, compression testing… The biocompatibility on the elaborated alloys were tested thanks to collaborations with others research teams
Vaughan, Luiz Leroy Thome. "Influence du carbone et du niobium sur la rhéologie et les mécanismes de déformation à chaud dans le domaine alpha d'alliages à base de fer et fer-chrome." Saint-Etienne, EMSE, 2007. http://www.theses.fr/2007EMSE0012.
Повний текст джерелаThe present work follows a series of investigations carried out in the same research group on industrial alloys, in particular on ferritic stainless steels. The aim is to bring into evidence the influence of niobium and carbon on the hot working of such materials within the ferritic range. For that purpose, model Fe and Fe-Cr alloys were prepared and submitted to compression and torsion tests at various temperatures and strain rates. The resulting microstructures were analyzed by optical metallography and electron back-scattered diffraction (EBSD), as well as deformation textures. In all alloys, hot working occurs by continuous dynamic recrystallization. In particular, generation of high angle boundaries within the initial grains was observed. This mechanism is enhanced by the presence of solid solution niobium and the recrystallized microstructures become finer when the carbon or niobium content of the alloys is increased. When niobium is combined with carbon or chromium, it produces a fine precipitation involving an even more fragmented microstructure. Accordingly, such cases are associated with the largest flow stresses. The rheological parameters strain rate sensitivity (m) and apparent activation energy (Q) were derived for the various alloys. Q is globally larger than for pure iron. Finally, in compression the main texture component is the <100> // z (compression axis) fiber, while in torsion the main component is D2 {1 12} < 111 > (for negative shear)
Cordonnier, Tiphaine. "Tenue mécanique d'interfaces modèles dans les alliages Fe-40%at. Al (ordonnés B2)." Saint-Etienne, EMSE, 2006. http://www.theses.fr/2006EMSE0010.
Повний текст джерелаUse of FeAl alloys is still severely limited by their room temperature intergranular brittleness, assumed to be due to a low intrinsic cohesion of the interfaces. Until now, doping with boron was the only way to reinforce these weak boundaries. The fracture behaviour of some special boundaries, with <100> symmetric tilt boundary, pure or doped with boron, was characterized. Results indicate that boron would suppress intergranular fracture by improving slip transfert across the grain boundaries. Then, and on the contrary to the common knowledge, boundaries of B-free bicrystals exhibit a cohesion high enough to avoid intergranular fracture. <100> tilt boundaries are thus special boundaries regarding fissuration resistance, with grain boundary plane playing a major role. The existence of such highly cohesive interfaces opens a new way to efficiently modify macroscopic behaviour of B-free FeAl through a "grain boundary engineering" approach
Частини книг з теми "Alliages modèles à base de fer"
DEBEAUFORT, Frédéric. "Emballages métalliques." In Matériaux et procédés d’emballage pour les industries alimentaires, cosmétiques et pharmaceutiques, 95–126. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9039.ch4.
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