Metallurgical and Materials Transactions A

, Volume 47, Issue 3, pp 981–984 | Cite as

3D Synchrotron Imaging of a Directionally Solidified Ternary Eutectic

  • Anne Dennstedt
  • Lukas Helfen
  • Philipp Steinmetz
  • Britta Nestler
  • Lorenz Ratke


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.


AlSi Alloy Directionally Solidify Ternary Eutectic European Synchrotron Radiation Facility Gadolinium Gallium Garnet 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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.

Supplementary material

11661_2015_3294_MOESM1_ESM.mpeg (48.8 mb)
Supplementary material 1 (MPEG 49979 kb)


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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2015

Authors and Affiliations

  • Anne Dennstedt
    • 1
  • Lukas Helfen
    • 2
    • 3
  • Philipp Steinmetz
    • 4
  • Britta Nestler
    • 4
  • Lorenz Ratke
    • 5
  1. 1.Institut für Materialphysik im WeltraumDeutsches Zentrum für Luft- und Raumfahrt (DLR)KölnGermany
  2. 2.Laboratory for Application of Synchrotron Radiation, Institute for Photon Science and Synchrotron Radiation, ANKAKarlsruhe Institute of TechnologyKarlsruheGermany
  3. 3.ESRF - The European SynchrotronGrenobleFrance
  4. 4.Institute for Applied Materials, Computational Materials Science (IAM-CMS)Karlsruhe Institute of Technology (KIT)KarlsruheGermany
  5. 5.Institut für Werkstoff-ForschungDeutsches Zentrum für Luft- und Raumfahrt (DLR)KölnGermany

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