References of "Lamberigts, M"
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See detailStudy of composite aluminium alloys produced by stir casting
Lecomte-Beckers, Jacqueline ULg; Coutsouradis, D.; Lamberigts, M.

in Proceedings of the International Conference on Advanced Aluminium and Magnesium Alloys (1990)

Solidification processing of aluminium alloys reinforced by short fibers and particles of SIC was studied. The reinforcements were introduced and dispersed into aluminium alloys melts by the vortex method ... [more ▼]

Solidification processing of aluminium alloys reinforced by short fibers and particles of SIC was studied. The reinforcements were introduced and dispersed into aluminium alloys melts by the vortex method. The paper describes the fabrication process used to provide adequate bonding between reinforcemments and liquid matrix. The commercial alloys (2024, 319) containing element such as Cu or Mg chosen to provide adequate wetting were used and compared. The samples were used in the as-cast state or after hot rolling. The samples were examined both in the as-cast or as-rolled and heat treated conditions (T6). The specimens were submitted to microstructural examinations (optical and SEM) density measurements and mechanical property evaluation. Examinations of the results by statistical analyses show that both SIM chopped fibers and particles increase significantly the mechanical properties of the alloys especially at high temperature. However it is shown that the behaviour of the different alloys is strongly different. The effect reinforcement depends on the nature of the alloy and can be related to microstructural features. [less ▲]

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See detailSilicon carbide fibers and particles reinforced aluminium alloys produced by stir casting
Lecomte-Beckers, Jacqueline ULg; Coutsouradis, D.; Lamberigts, M.

in Proceedings of The 4th European Conference on Composite Materials - Developments in The Science and Technology of Composite Materials (1990)

This study is concerned with the solidification processing of aluminium alloys reinforced by short fibers and particles of SiC. The reinforcements have been introduced and dispersed into aluminium alloys ... [more ▼]

This study is concerned with the solidification processing of aluminium alloys reinforced by short fibers and particles of SiC. The reinforcements have been introduced and dispersed into aluminium alloys melts by the vortex method. The commercial alloys (2024, 319) containing elements such as Cu or Mg chosen to provide adequate wetting have been used and compared. The samples have been examined both in the as-cast or as-rolled and heat treated conditions (T6). Examinations of the mechanical properties by statistical analyses show that both SiC chopped fibers and particles increase significantly the mechanical properties of the alloys especially at high temperature. [less ▲]

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See detailMicroporosity formation in nickel-base superalloys in relation to their solidification sequence
Lecomte-Beckers, Jacqueline ULg; Lamberigts, M.

in Proceedings of the International Conference of High Temperature Alloys for Gas Turbine and Other Applications (1986)

This work is aimed at showing how the proneness of superalloys to microporosity formation can be estimated by the tsP* pararneter which makes use of various solidification features. The latter can be ... [more ▼]

This work is aimed at showing how the proneness of superalloys to microporosity formation can be estimated by the tsP* pararneter which makes use of various solidification features. The latter can be derived from quantitative differential thermal analysis (DTA) resuits through the original method described in the text. The technique was applied to two IN 100 master meUs of distinct grades (virgin or revert) which had been showrt to behave very differently in the foundry. It led to ascribe the poorer performance of the revert meit to its particular solidification sequence leading higher dendrite tortuosity and lesser residual liquid fluidity. [less ▲]

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See detailReverting foundry nickel-base superalloys
Lamberigts, M.; Lecomte-Beckers, Jacqueline ULg; Drapier, J.-M.

in International Conference on High Temperature Alloys for Gas Turbine and Other Applications (1986)

This work was part of a COST 50 project aimed at ways to make revert IN 100 less prone to soundness defects and associated property degradations. It was based on carrots cast from 5 master distinct master ... [more ▼]

This work was part of a COST 50 project aimed at ways to make revert IN 100 less prone to soundness defects and associated property degradations. It was based on carrots cast from 5 master distinct master melts, which were evaluated through metallography and Differential Thermal Analysis. Recycling was shown to affect grain size and morphology, carbide precipitation features, eutectic pool distribution and above all, microporosity level. The experimental evidence strongly suggests that, in revert master melts, carbides grow onto pre—existent nuclei made of TiN. This in turn reduces total heat of solidification, thus making the residual liquid substantially less fluid and consequently less capable of coxnpensating for solidification shrinkage in a dendrite structure which is more “tortuous”, because of its lower maturation rates. The effects of recycling can therefore be better accounted for in terms of bound nitrogen rather than of gas content as such. [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 ▲]

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