References of "Walmag, G"
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See detailInfluence of the chemical composition on the thixoformability of steels
Pierret, Jean-Christophe ULg; Rassili, Ahmed ULg; Vaneetveld, Grégory ULg et al

in International Journal of Material Forming (2009)

This work deals with the qualification of a variety of steels for their shaping by the thixoforging process. This technology requires setting up a globular microstructure inside the material during ... [more ▼]

This work deals with the qualification of a variety of steels for their shaping by the thixoforging process. This technology requires setting up a globular microstructure inside the material during reheating to a temperature between the solidus and liquidus. As the evolution of the liquid fraction is strongly connected to the steel composition, it is useful to understand how low carbon steel could be alloyed and still thixoformable. The most critical parameter for this is the carbon content. In this study, a theoretical analysis of the phase evolution during the reheating has been performed on the MT Data software to investigate the influence of alloying elements. These first results have been confirmed by Differential Thermal Analysis and by inductive heating experiments on steel slugs. Finally, some parts have been shaped using a thixoforming tool mounted on a hydraulic press. Micrographs of reheated slugs as well as of actual parts are also presented in this paper. [less ▲]

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See detailEtude microstructurale des phases métastables dans les alliages Zn-Al
Lecomte-Beckers, Jacqueline ULg; Terziev, L.; Rashev, P. et al

in Journal de Microscopie et de Spectroscopie Electroniques (1989), 14[2]

Description de la précipitation complexe observée durant le vieillissement des alliages zinc-aluminium avec de petites quantités de cuivre et de magnésium

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See detailEtude microstructurale des alliages ZA12 et ZA27 au cours du vieillissement
Lecomte-Beckers, Jacqueline ULg; Terziev, L.; Rachev, P. et al

in Journal de Microscopie et de Spectroscopie Electroniques (1988), 13

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See detailMicrostructural study of high strength rolled Zn-Cu-Ti alloys
Lecomte-Beckers, Jacqueline ULg; Walmag, G.

in Micron and Microscopica Acta (1987), 18(3), 241-242

The aim of the research is to define the microstructure required to obtain the better mechanical resistance after rolling of Zn-Cu-Ti alloys which composition range is 0.78-0.98% (in weight)for Cu and 0 ... [more ▼]

The aim of the research is to define the microstructure required to obtain the better mechanical resistance after rolling of Zn-Cu-Ti alloys which composition range is 0.78-0.98% (in weight)for Cu and 0.12-0.18% (in weight) for Ti. These alloys have been rolled at the VM-AF (Vieille-Montagne - Asturienne France) rolling plant [less ▲]

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See detailThe investment casting and processing of cobalt-base and cobalt-bearing superalloys
Lamberigts, M.; Lecomte-Beckers, Jacqueline ULg; Walmag, G. et al

in Second Congress Cobalt Metallurgy and Uses (1985)

To cope with the demands of engine manufacturers and other users, superalloys have been brought to work in service at temperatures which represent a very substantial fraction of their melting point. In ... [more ▼]

To cope with the demands of engine manufacturers and other users, superalloys have been brought to work in service at temperatures which represent a very substantial fraction of their melting point. In addition to high temperature capability, they must exhibit mechanical strength, not only under static, but also under cyclic stressing conditions, and offer appropriate oxidation and corrosion resistance. This can only be achieved by tailoring their chemistry and processing conditions to the particular needs of the application under consideration. The evolution of component design and alloy chemistry, and some compositional effects and processing improvements in cast Ni-base superalloys are discussed. [less ▲]

Detailed reference viewed: 64 (3 ULg)