Paper Title:

Ultra Fast In Situ X-Ray Micro-Tomography: Application to Solidification of Aluminium Alloys

Periodical Materials Science Forum (Volumes 706 - 709)
Main Theme THERMEC 2011
Edited by T. Chandra, M. Ionescu and D. Mantovani
Pages 1713-1718
DOI 10.4028/www.scientific.net/MSF.706-709.1713
Citation Luc Salvo et al., 2012, Materials Science Forum, 706-709, 1713
Online since January, 2012
Authors Luc Salvo, Marco Di Michiel, Mario Scheel, Pierre Lhuissier, B. Mireux, Michel Suéry
Keywords Aluminum Alloy, Equiaxed Growth, Solidification, Tomography
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Abstract

X-ray micro-tomography has been applied recently in a wide range of research fields (damage in materials, solidification …). Thanks to the high flux of synchrotrons and specific cameras the total time to acquire a scan was considerably reduced. The use of a specific camera based on CMOS technology allows dividing the acquisition time for a complete scan by a factor of 100. Therefore we have been able to perform in situ solidification of aluminium-copper alloys at high cooling rates (between 1 and 10°C/s) and we will show results concerning the evolution of the microstructure in 3D in the early stage of solidification, in particular the morphology of the solid phase and the kinetics of growth.