References of "Lecomte-Beckers, Jacqueline"
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See detailPreparation of BaZrO3 powders by a spray-drying process
Robertz, B.; Boschini, Frédéric ULg; Rulmont, André ULg et al

in Journal of Materials Research (2003), 18(6), 1325-1332

The potential use of barium zirconate for the manufacture of corrosion-resistant substrates emphasizes the need for a simple, inexpensive, and easily scalable process to produce high-quality powders with ... [more ▼]

The potential use of barium zirconate for the manufacture of corrosion-resistant substrates emphasizes the need for a simple, inexpensive, and easily scalable process to produce high-quality powders with well-controlled composition and properties. However, the classical solid-state preparation of barium zirconate leads to an inhomogeneous powder unsuitable for applications in highly corrosive environment. For this paper, the possibility to use the spray-drying technique for the preparation of BaZrO3 powders with a controlled size distribution and morphology was investigated. The influence of the nature and concentration of the precursor solution and the influence of the spray-drying step are discussed on the basis of x-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and dilatometric measurements. [less ▲]

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See detailHSS alloys
Lecomte-Beckers, Jacqueline ULg

Scientific conference (2003, June)

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See detailStudy of complex carbides obtained after solidification and thermal treatment in High Speed Steels
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in Proceedings des journées annuelles de la Société belge de physique SBP-BSP (27 et 28 mai 2003) (2003, May)

High-speed steels (HSS) rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperature are defining characteristics of HSS. Many carbides are present in ... [more ▼]

High-speed steels (HSS) rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperature are defining characteristics of HSS. Many carbides are present in these alloys, each having different effects upon the final properties of HSS. As a result, the nature, the morphology and the amount of these carbides are factors of important concern. Optical microscopy combined with electron microscopy lead to quicker identification and characterization of HSS carbides. [less ▲]

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See detailNuclear materials I
Lecomte-Beckers, Jacqueline ULg

Learning material (2003)

*Brief review of most important mechanical properties of materials - stress-strain relationship - ductile and brittle fracture; ductile-brittle transition - fatigue failure - creep * Stress analysis ... [more ▼]

*Brief review of most important mechanical properties of materials - stress-strain relationship - ductile and brittle fracture; ductile-brittle transition - fatigue failure - creep * Stress analysis: stress intensity, thermal stresses * Functional requirements of materials in a nuclear environment - "nuclear" materials: fuel, fuel cladding, moderator/reflector, coolant - structural materials: reactor internals and vessel, piping, valves * Degradation mechanisms of materials in a nuclear environment - radiation effects: general principles, atomic displacements, embrittlement, swelling fatigue: due to thermal stresses and stratification - corrosion: p.m. (to be developed in course "Nuclear Materials II" * Detailed treatment of important materials in a nuclear environment (especially nuclear- mechanical interactions and relationships) - fuel and cladding - moderator/reflector - structural materials (incl reactor internals, reactor vessel) [less ▲]

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See detailLingopti project: semi-continuous casting process of coper-nickel alloys
Pecquet, Etienne ULg; Pascon, Frédéric ULg; Lecomte-Beckers, Jacqueline ULg et al

in Dick, E.; Vierendeels, J.; Cantrijn, F. (Eds.) et al Proceedings of the 6th national congress on theoretical and applied mechanics (2003)

Lingopti project is a First Europe project. It treats semi-continuous casting of copper-nickel alloys ingots. The research, performed in the University of Liège, consists in the optimisation of the mould ... [more ▼]

Lingopti project is a First Europe project. It treats semi-continuous casting of copper-nickel alloys ingots. The research, performed in the University of Liège, consists in the optimisation of the mould and the whole casting process of the LBP S.A. company (Chênée – Liège) to obtain better cast products. In fact, cast products sometimes present long oscillation marks (λ ≈ 500mm) and some ingots have many internal cracks. The semi-continuous process consists in the vertical casting of 7m height ingots. The goal is also to test different chemical compositions of the material and to predict what happens on the casting process. [less ▲]

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See detailInclusions and Carbides characterisation in High-Speed Steels
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in Proceedings de la journée de la société belge de microscopie (SBM-BVM), RUCA, UA (2003)

Prior to assessment of inclusions and carbides is the identification of thes particles. The present survey shows how we determine the nature of inclusions and carbides, while using Scanning Electron ... [more ▼]

Prior to assessment of inclusions and carbides is the identification of thes particles. The present survey shows how we determine the nature of inclusions and carbides, while using Scanning Electron Microscopy and Energy Dispersive Spectroscopy with X-Rays. [less ▲]

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See detailDevelopment of a new high-speed steel with optimized carbide composition for mill rolls
Lecomte-Beckers, Jacqueline ULg; Tchuindjang, Jérôme Tchoufack ULg; Pirard, Eric ULg et al

in Stal' (2003), 2

High Speed Steel (HSS) cast rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperatures, are defining features of HSS. Many types of carbides are ... [more ▼]

High Speed Steel (HSS) cast rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperatures, are defining features of HSS. Many types of carbides are present in these alloys, each having different effect upon their final properties. As a result, nature, morphology and amount of these carbides are factors of important concern. Identification and characterisation of carbides were realised. MC, M2C, M7C3 carbides were found. Some relationships with mechanical properties were obtained especially in the field of the solidification sequence that affects grain size and carbides dispersion. [less ▲]

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See detailEtude d'aciers et de fontes au chrome
Lecomte-Beckers, Jacqueline ULg; Carton, Marc ULg

Report (2002)

Detailed reference viewed: 8 (1 ULg)
See detailCompetition between ordering and phase separation in a model superalloy NiCrAl
Delheusy, M.; Bley, F.; Gaspard, Jean-Pierre ULg et al

Report (2002)

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See detailTT of high temperature alloys
Lecomte-Beckers, Jacqueline ULg

Scientific conference (2002, January)

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See detailIdentification d'une loi thermo-élasto-viscoplastique en vue de la modélisation du laminage à chaud du cuivre
Moureaux, P.; Moto Mpong, S.; Remy, M. et al

in Journal de Physique IV (2002), 102

la mise au point d'un modèle de simulation de la dernière passe du laminage à chaud du cuivre ne présente à priori pas de problème du point de vue numérique pour un code d'éléments finis non linéaire. La ... [more ▼]

la mise au point d'un modèle de simulation de la dernière passe du laminage à chaud du cuivre ne présente à priori pas de problème du point de vue numérique pour un code d'éléments finis non linéaire. La collecte d'informations précises tant sur le procédé industriel que sur le comportement du matériau est par contre une opération non triviale. Cet article présente les diverses méthodes expérimentales mises en œuvre pour caractériser le matériau: essais de compression à chaud, mesures d'analyse thermique différentielle, essais de dilatométrie et de diffusivité. Les méthodes permettant d'identifier les paramètres de la loi élasto-visco-plastique de type Norton-Hoff à partir des essais sont présentées et une analyse bibliographique investigue le problème de la détermination du module de Young à haute température. Tant les hypothèses supplémentaires relatives au procédé et nécessaires au modèle que les résultats finaux sont résumés. [less ▲]

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See detailPhysical metallurgy of a HSS material for hot rolling mill rolls
Lecomte-Beckers, Jacqueline ULg; Tchoufang Tchuindjang, Jérôme; Pirard, Eric ULg et al

in Proceedings of the 14th Rolling Conference - 1st Conference on Uses of Steel (2002)

High Speed Steel (HSS) cast rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperatures, are defining features of HSS. Many types of carbides are ... [more ▼]

High Speed Steel (HSS) cast rolls are used in front finishing stands of hot strip mills. Good wear resistance and hardness at high temperatures, are defining features of HSS. Many types of carbides are present in these alloys, each having different effect upon their final properties. As a result, nature, morphology and amount of these carbides are factors of important concern. Identification and characterisation of carbides were realised. MC, M2C, M7C3 carbides were found. Some relationships with mechanical properties were obtained especially in the field of the solidification sequence that affects grain size and carbides dispersion. [less ▲]

Detailed reference viewed: 93 (10 ULg)
See detailMaterials for advanced power engineering 2002 : Proceedings of the 7th Liège conference
Lecomte-Beckers, Jacqueline ULg; Schubert, F.; Ennis, P. J.

Book published by Schriften des Forschungszentrum Julich, Reihe energietechnik/Energy Technology Forschungszentrum Julich (2002)

Detailed reference viewed: 120 (1 ULg)