Abstract
The aim of this paper is to report recent results concerning the microstructure evolution observed by continuous in situ x-ray microtomography in Al-Cu alloys during various treatments. These treatments include solidification and tensile deformation in the semisolid state both in solidification and in isothermal conditions. During solidification, x-ray microtomography allows measurement of various microstructure parameters and characterization of the physical mechanisms occurring at the scale of the dendrites. During deformation, liquid flow towards the deformed zone can be observed and quantified together with pore and crack formation in liquid films. These observations are discussed with reference to the formation of defects during solidification.
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Acknowledgements
The authors wish to thank ESRF Grenoble for providing beam time within the Long Term Project MA560 and all staff members of the ID19 beamline for their technical support. Part of this work was also carried out in the framework of the projects ANR-05-BLAN-0286-01 “TOMOSOLIDAL” and ANR-08-BLAN08-2_318938 “SIMUZAL” supported by the French Agence Nationale de la Recherche, which is gratefully acknowledged.
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Suéry, M., Terzi, S., Mireux, B. et al. Fast In Situ X-Ray Microtomography Observations of Solidification and Semisolid Deformation of Al-Cu Alloys. JOM 64, 83–88 (2012). https://doi.org/10.1007/s11837-011-0219-7
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DOI: https://doi.org/10.1007/s11837-011-0219-7