<Emphasis Type="Italic">In-situ</Emphasis> three-dimensional microstructural investigation of solidification of an Al-Cu alloy by ultrafast x-ray microtomography |
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Authors: | Olivire Ludwig Marco Dimichiel Luc Salvo Michel Suéry Peter Falus |
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Affiliation: | (1) the Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland;(2) the European Synchrotron Radiation Facility, ESRF, 38000 Grenoble, France;(3) the Institute National Polytechnique de Grenoble, 38409 Saint-Martin d’Hères, France;(4) Argonne National Laboratory, 60439 Argonne, IL |
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Abstract: | This article presents the first results of a new experimental technique developed to investigate the evolution of the morphology
of the solid and liquid phases during the solidification of a metallic alloy. It consists of ultrafast X-ray microtomography
observations of a solidifying aluminum-copper alloy carried out at ESRF. These experiments allow investigating in-situ the formation of the casting microstructure and of the evolution of the morphology of the solid and the liquid phases. It
allows also the in-situ determination of the solidification path, of the variation of the copper content in both the liquid and solid phases, and
of some other characteristic parameters of the microstructure. Provided that some forthcoming technical improvements on the
experimental setup are performed, more quantitative results can be obtained as well as better image quality and resolution. |
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