Literatura académica sobre el tema "Alliages – Composition chimique – Propriétés mécaniques"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Alliages – Composition chimique – Propriétés mécaniques".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Artículos de revistas sobre el tema "Alliages – Composition chimique – Propriétés mécaniques":
Zoghbi, André EL, Lorena Klein y Isabelle Frateur. "Évaluation de la résistance à la corrosion des fils orthodontiques par mesures électrochimiques et microscopie électronique à balayage (MEB)". L'Orthodontie Française 84, n.º 4 (27 de noviembre de 2013): 367–81. http://dx.doi.org/10.1051/orthodfr/2013063.
Monties, Bernard. "Composition chimique des bois de chêne: composés phénoliques, relations avec quelques propriétés physiques et chimiques susceptibles d'influencer la qualité des vins et des eaux-de-vie". OENO One 21, n.º 3 (30 de septiembre de 1987): 169. http://dx.doi.org/10.20870/oeno-one.1987.21.3.1282.
Elaieb, Mohamed Tahar, Ahmed Namsi, Marie Tella, Gaël Senecal, Marie-France Thevenon y Kévin Candelier. "A natural ancestral saltwater treatment to modify the technological properties of date palms". BOIS & FORETS DES TROPIQUES 338 (11 de febrero de 2019): 15. http://dx.doi.org/10.19182/bft2018.338.a31676.
Tesis sobre el tema "Alliages – Composition chimique – Propriétés mécaniques":
Stasiak, Tomasz. "High Entropy Alloys with improved mechanical properties". Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1R050.
High Entropy Alloys (HEAs) are a new type of multicomponent alloys. They contain at least five elements with the content of each between 5 and 35 at. %. The high configuration entropy, which is the source of the name of the whole family of alloys, together with other parameters, such as mixing enthalpy, atomic size difference, electronegativity difference, or valence electron concentration, stabilize a solid solution instead of complex intermetallic compounds. Promising properties and interesting microstructures focus the attention of the scientific community to HEAs.In this work, the novel Al-Cr-Fe-Mn-Mo high entropy alloy family was studied. The microstructural and chemical analyses were performed by XRD, Mössbauer spectrometry, SEM, TEM, EDX, EBSD. In the first stage, parametric approach calculations were carried out to optimize the chemical composition of the alloy. The selected compositions were prepared by mechanical alloying in different devices. The optimized conditions that ensure maximum chemical homogeneity of powder and the small contamination from balls and vial materials were chosen. In most of the powders, two bcc phases form during mechanical alloying with the lattice parameters about 3.13 Å (bcc#1) and 2.93 Å (bcc#2). The heat treatment of powder results in several phase transformations (e.g., the formation of the χ phase). The annealing at 950 °C for 1 h promotes the significant increase of volume fraction of the bcc#2 phase, while the bcc#1 and χ disappear. Nevertheless, small fractions of carbides and oxides were found. The bulk samples were fabricated by hot press sintering of the optimized mechanically alloyed powders. The conditions of consolidation were evaluated and optimized to promote the formation of the bcc phase and reduce the formation of carbides and oxides resulting from the contamination during mechanical alloying and sintering. The optimized bulk samples present a major disordered body-centered cubic phase (> 95 % of volume fraction) with a lattice parameter of 2.92 Å and a very small fraction of carbides (M6C, M23C6) and oxides (Al2O3). The bcc phase is stable after annealing at 950 °C for 10 h. Moreover, the alloy presents very high hardness up to 950 HV2N. The compression tests of the optimized bulk sample from room temperature to 800 °C reveal promising properties, especially between 600 and 700 °C. The alloy shows brittle behavior between room temperature and 400 °C. However, the alloy starts to demonstrate some degree of plasticity at 500 °C. At 600 °C, the yield strength is 1022 MPa, while strain to failure is about 22 %
Vergnat, Michel. "Hydrogénation d'alliages semi-conducteurs amorphes : Structure et propriétés électroniques des alliages amorphes hydrogènes SI::(1-X)SN::(X):H". Nancy 1, 1988. http://www.theses.fr/1988NAN10322.
Bordereau, Victor. "Relations quantitatives entre composition chimique, microstructure et propriétés mécaniques d'aciers bainitiques". Thesis, Paris, ENMP, 2015. http://www.theses.fr/2015ENMP0063.
Air-cooled bainitic steel grades are increasingly being considered as substitutes to quenched & tempered martensitic steels in the realization of automotive forged parts. They allow significant manufacturing cost and time reductions. To compete with martensitic steels, high mechanical strength is provided by a complex chemical composition, leading to a multi-scale and multi-constituent microstructure after air-cooling. In order to optimize such chemical composition, need in rationalization of the steel grade development has emerged.The main aim of this Ph.D project was to build a physically based knowledge of the steel grade by making quantitative links between chemical composition, microstructure and mechanical properties in as-forged condition.The influence of several alloying elements on the as-forged microstructure, as well as some synergies, has been established using relevant CCT diagrams.Dominant fracture mechanisms and controlling microstructural parameters in concern of impact toughness have been identified with the help of comprehensive fracture surface, cross-section observations and targeted quantitative microstructural characterization.The respective contributions to yield strength of classical strengthening mechanisms have been quantitatively determined, based on several hypothesis and the use of several microstructural parameters. At the same, precious information on tensile behaviour has also been deduced from the observation of the fractured tensile test specimens.All these results allow identifying the key microstructural parameters, such as bainitic packet size or secondary microstructural constituents content, that have to be targeted in the alloy design
Kamleh, Rabih. "Composition physico-chimique des différents laits de la plaine de la Bekaa : composition et caractéristiques rhéologiques des différents beurres produits". Vandoeuvre-les-Nancy, INPL, 2005. http://www.theses.fr/2005INPL026N.
Cows' milk characteristics, milk fat and the rheological properties of different produced butters in four different regions in the Bekaa valley in Lebanon have been studied. Major milk components, milk fats and butter characteristics have shown significant seasonal and regional variations. The major milk components were high during the cold period due to the minimal milk production and the feed composition. Two different peaks of the somatic cell count have been noticed: the first during the fall season related to the hygiene situation of the farms and the second during the spring season related to the high calving rate. The short chain fatty acids were high during the cold period due to the stage of lactation. The long chain fatty acids variations were related to the feed composition. The solid fat content (SFC) and the fusion's enthalpy (J/g) of high melting triacylglycerols were high during the cold period in ail the districts with an exception in Central Bekaa where the impact of the feeding composition was clear. The butters' humidity was high during the hot season. Significant fluctuations of the rheological properties have been identified in fall season probably related to the triacylglycerols compositions' variations. Significant correlations were established between the rheological characteristics of butters (hardness, cohesiveness and suppleness) the composition and the characteristics of milk fat (short and long fatty acids and fusion's enthalpy oftriacylglycerols)
Beaujean, Ivan. "Etude du comportement mécanique de différents alliages de Zn-Cu-Ti : influence de la composition sur la pliabilité". Metz, 1993. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1993/Beaujean.Ivan.SMZ9331.pdf.
We worked on different zinc-copper-titanium alloy sheets (ZnCu matrix with Ti Zn15 as second phase). We studied in particular the texture, microstructure and mechanical properties of these sheets, especially their pliability. Indeed, it appears that the pliability of these sheets is determined to a large extent by their texture and microstructure. When the sheets have large grains (15 [micro]m), the texture is rather smooth and many grain boundaries show a strong misorientation ; intergranular cracking may appear as a consequence. When the sheets have smaller grains (8 [micro]m), the texture is sharper, the grain boundaries show a small misorientation and the pliability at low temperature is fairly good. By further reduction of the grain size, a new texture component appears, which c axes are tilted to a large to the normal of the sheet. As intergranular cracking easily occurs in these grains (clivage on the 00. 2 plane, the global pliability of the sheet is diminished
Kenmegne, Kamdem Amos Théophile. "Étude des propriétés mécaniques de la viande en relation avec le procédé de hachage". Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL015N.
Alcantara, Marco. "Bétons auto-plaçants et fibrages hybrides : composition, rhéologie et comportement mécanique". Toulouse, INSA, 2004. http://www.theses.fr/2004ISAT0018.
The goal of this work was to develop Self-Compacting Concretes with fiber reinforcement either with adherent metal fibres or with polymeric synthetic slipping fibres or with a mixture of both. Their composition was optimized in order to satisfy at the same time a good rheological behaviour of the freshly-mixed concrete, highlighted by the tests of workability recommended, and a good mechanical behaviour of the hardened concrete starting from the basic characteristics which are strength in compression and in tension. The tests of workability used previously for optimization of our compositions not appearing sufficiently objective, we tried to connect them to rheological parameters which, without being intrinsic, appeared more quantifiable to us. In order to confirm the positive contribution of fibres in the behaviour of the concrete we established the laws of strain-strength behaviour by tests to the rupture in controlled deformation. To finish we evaluated the energy at the time of failure under bending of our various compositions of concrete with hybrid fiber reinforcement. We thus established a law of additivity of the various behaviours due to the respective influences of metal adherent fibres and slipping propylene fibres
Guillon, Nathalie. "Étude de composés Ti-B-N élaborés par dépot sous vide : relation entre microstructure, composition chimique et propriétés mécaniques". Grenoble INPG, 1997. http://www.theses.fr/1997INPG4207.
Aubel, Dominique. "Apport des techniques de photoémission à la connaissance des hétérostructures Ge/Si(001), Si/Ge(001), Si1-xGex/Si(001) et Si1-xGex/Ge(001)". Mulhouse, 1995. http://www.theses.fr/1995MULH0412.
Berger, Claire. "Propriétés électroniques des alliages quasicristallins AlMn". Grenoble 1, 1987. http://www.theses.fr/1987GRE10067.