This file was created by the TYPO3 extension bib --- Timezone: CET Creation date: 2021-01-18 Creation time: 02-50-43 --- Number of references 14 article Geandier:2014b Journal of heat treatments and materials 2014 69 54--59 Département SI2M : Microstructures et Contraintes 10.3139/105.110206 G.Geandier M.Dehmas M.Mourot E.Aeby-Gautier S.Denis O.Martin N.Karnatak article Esin:2014 Acta Materialia 2014 80 118--131 Département SI2M : Microstructures et Contraintes http://dx.doi.org/10.1016/j.actamat.2014.07.042 Elsevier BV 1359-6454 10.1016/j.actamat.2014.07.042 V.A.Esin B.Denand Q.Le Bihan M.Dehmas J.Teixeira G.Geandier S.Denis T.Sourmail E.Aeby-Gautier article Perevoshchikova2014 Computational Materials Science 2014 82 151-158 Département SI2M : Microstructures et Contraintes http://dx.doi.org/10.1016/j.commatsci.2013.09.047 Elsevier 10.1016/j.commatsci.2013.09.047 NataliyaPerevoshchikova BenoitAppolaire JulienTeixeira ElisabethAeby-Gautier SabineDenis article Geandier:2013 Materials Science Forum 2013 768-769 313-320 Département SI2M : Microstructures et Contraintes 10.4028/www.scientific.net/MSF.768-769.313 G.Geandier M.Dehmas M.Mourot E.Aeby-Gautier S.Denis O.Martin N.Karnatak article Devynck:2013 Key Engineering Materials 2013 554--557 1530--1538 Département SI2M : Microstructures et Contraintes 10.4028/www.scientific.net/KEM.554-557.1530 S.Devynck M.Gradeck J.P.Bellot S.Denis G.Maigrat M.Varlez T.Benard article PEREVOSHCHIKOVA:2012 Computational Material Science 2012 61 54--66 Département SI2M : Microstructures et Contraintes 10.1016/j.commatsci.2012.03.050 N.Peresvochchikova B.Appolaire J.Teixeira E.Aeby-Gautier S.Denis article DEVYNCK:2012 Key Engineering Materials 2012 504-506 1049-1054 Département SI2M : Microstructures et Contraintes 10.4028/www.scientific.net/KEM.504-506.1049 S.Devynck M.Gradeck J.P.Bellot S.Denis M.Vaelez T.Benard article Brunetti:2012 Micron 2012 43 2-3 396-406 In single-crystal nickel-based superalloys, the lattice mismatch associated with interface coherency between gamma matrix and gamma' precipitates has a strong influence on mechanical properties. The unconstrained lattice misfit in a single-crystal of the MC2 nickel-based superalloy is determined using convergent beam electron diffraction measurements and finite element calculations. The apparent lattice parameters of both constrained phases are obtained in thin foils, using a new multi-pattern approach, which allows for unambiguous determination of all the lattice parameters considering the real symmetry of the strained crystals. Finite element calculations are used to establish relations between the constrained and unconstrained lattice parameters, with the stress relaxation resulting from the thin foil geometry taken into account. (C) 2011 Elsevier Ltd. All rights reserved. Département SI2M : Microstructures et Contraintes 0968-4328 10.1016/j.micron.2011.10.009 G.Brunetti A.Settefrati A.Hazotte S.Denis J. -J.Fundenberger A.Tidu E.Bouzy article Perevoshchikova:2011 Solid State Phenomena 2011 172-174 Part 1 1214-1219 We have adapted the Quickhull algorithm with the general dimension Beneath-Beyond algorithm <prt>[</prt>6] for computing the convex hull of the Gibbs energy hypersurface of multicomponent two-phase alloys. We illustrate the salient features of our method with calculations of isothermal ferrite-austenite equilibria in Fe-C-Cr. Finally, successive equilibrium calculations in a Fe-C-Cr-Mo steel over a large temperature range show the benefit of computing the convex hull before performing the conventional Newton-Raphson search. Département SI2M : Microstructures et Contraintes Brechet, Y and Clouet, E and Deschamps, A and Finel, A and Soisson, F Solid State Phenomena SOLID-SOLID PHASE TRANSFORMATIONS IN INORGANIC MATERIALS, PTS 1-2 Mat &amp; Process Sci &amp; Engn Lab; CEA, Tranverse Programme Adv Mat; French Aerospace Lab; Inst Chem, Natl Ctr Sci Res; French Phase Field Network; Lab Etude Microstructures 1012-0394 10.4028/www.scientific.net/SSP.172-174.1214 BenoitAppolaire NataliyaPerevoshchikova JulienTeixeira SabineDenis article Appolaire:2010 Philisophical magazine 2010 90 1-4 461-483 We propose a description of incoherent and semi-coherent interfaces within the framework of diffuse interface modelling: accounting for the discontinuity of tangential displacements is an issue addressed by introducing a new field, called the incoherency field, located in the diffuse interface and able to release the shear stresses tangential to the interface. After having demonstrated the ability of the model to recover trends obtained by sharp interface models of sliding interfaces, the process of loss of coherency is investigated by assuming a local process which would result from the competition between the shear stress release at the interface and the interfacial energy increase. Département SI2M : Microstructures et Contraintes 1478-6435 10.1080/14786430903334324 BenoitAppolaire ElisabethAeby-Gautier Julien Da CostaTeixeira MoukraneDehmas SabineDenis article Douce:2008 International Journal of Microstructure and Materials Properties 2008 3 1 150 Département SI2M : Microstructures et Contraintes http://dx.doi.org/10.1504/IJMMP.2008.018399 Inderscience Publishers 1741-8429 10.1504/ijmmp.2008.018399 J F.Douce J.P.Bellot S.Denis F.Chaffotte G.Pellegrino F.Gouhinec P.Lamesle J.Maury article Teixeira:2008a COMPUTATIONAL MATERIALS SCIENCE 2008 42 2 266-280 A complete modeling of the phase transformation during the cooling following the forging has been carried out for near-beta titanium alloys. To that aim, we have improved a model predicting the influence of the deformation of the beta phase on the alpha phase precipitation during isothermal treatments, by extending its range of application to the case of cooling treatments. In particular, the precipitation of the intragranular morphology alpha(WI) has been introduced. We have proceeded step by step: calculations of heat treatments without any previous forging have first been performed. Then, the influence of the initial beta grain size have been studied. Finally, the influence of a previous deformation coming from the forging has been investigated. At each step, the calculations have been compared to some experiments, showing an good overall agreement. (C) 2007 Elsevier B.V. All rights reserved. Département SI2M : Microstructures et Contraintes 0927-0256 10.1016/j.commatsci.2007.07.056 Julien Da CostaTeixeira BenoitAppolaire ElisabethAeby-Gautier SabineDenis LudovicHericher article Aeby-Gautier:2007 Journal of Materials 2007 59 1 54-58 The prediction of microstructure during processing needs to characterize the phase transformation occurring during the thermal treatments and their kinetics. In-situ high-energy synchrotron x-ray diffraction experiments performed during temperature variations allow the characterization of the phase evolution. For some transformation conditions, the continuous recording of diffraction diagrams evidences clearly intermediate phases. The quantitative analysis of the diffraction diagrams gives the transformation kinetics of each phase as well as their cell parameters. Transformation kinetics obtained by this method are compared to results obtained by electrical resistivity. Département SI2M : Département SI2M : Microstructures et Contraintes 1047-4838 10.1007/s11837-007-0011-x E.Aeby-Gautier F.Bruneseaux J. Da CostaTeixeira B.Appolaire G.Geandier S.Denis article Teixeira:2007 MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 2007 448 1-2 135-145 We have investigated the microstructure evolutions in the Ti17 near beta titanium alloy during heat treatments. The phase transformation has first been studied experimentally by combining X-ray diffraction analysis, electrical resistivity and microscopy observations. From a series of isothermal treatments. a IT diauram has been determined, which takes into account the different morphologies. Then, a Johnson-Mehl-Avrami-Kolmogorov (JMAK) model has been successfully used to describe the phase transformation kinetics during either isothermal or cooling treatments. Finally, the coupling of the JMAK model to the finite element software ZeBuLoN allowed us to investigate the evolution of the spatial distribution of the different morphologies during the cooling of an aircraft engine shaft disk after forging. (c) 2006 Elsevier B.V. All rights reserved. Département SI2M : Microstructures et Contraintes 0921-5093 10.1016/j.msea.2006.10.024 Julien Da CostaTeixeira BenoitAppolaire ElisabethAeby-Gautier SabineDenis GeorgesCailletaud NadineSpath