3D Synchrotron Imaging of a Directionally Solidified Ternary Eutectic
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For the first time, the microstructure of directionally solidified ternary eutectics is visualized in three dimensions, using a high-resolution technique of X-ray tomography at the ESRF. The microstructure characterization is conducted with a photon energy, allowing to clearly discriminate the three phases Ag2Al, Al2Cu, and α-Aluminum solid solution. The reconstructed images illustrate the three-dimensional arrangement of the phases. The Ag2Al lamellae perform splitting and merging as well as nucleation and disappearing events during directional solidification.
KeywordsAlSi Alloy Directionally Solidify Ternary Eutectic European Synchrotron Radiation Facility Gadolinium Gallium Garnet
We wish to thank Maike Becker for participating in this ESRF beam time. The support by Deutsche Forschungsgemeinschaft (DFG; project No. RA537/14-2 and NE822/14-2) is gratefully acknowledged.
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