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Asghar Z, Requena G, Sket F. Multiscale tomographic analysis of heterogeneous cast Al-Si-X alloys. J Microsc. 2015;259(1):1-9doi: 10.1111/jmi.12241.
Asghar, Z., Requena, G., & Sket, F. (2015). Multiscale tomographic analysis of heterogeneous cast Al-Si-X alloys. Journal of microscopy, 259(1), 1-9. https://doi.org/10.1111/jmi.12241
Asghar, Z, et al. "Multiscale tomographic analysis of heterogeneous cast Al-Si-X alloys." Journal of microscopy vol. 259,1 (2015): 1-9. doi: https://doi.org/10.1111/jmi.12241
Asghar Z, Requena G, Sket F. Multiscale tomographic analysis of heterogeneous cast Al-Si-X alloys. J Microsc. 2015 Jul;259(1):1-9. doi: 10.1111/jmi.12241. Epub 2015 Apr 09. PMID: 25864713.
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J Microsc. 2015 Jul;259(1):1-9. doi: 10.1111/jmi.12241. Epub 2015 Apr 09.

Multiscale tomographic analysis of heterogeneous cast Al-Si-X alloys.

Journal of microscopy

Z Asghar, G Requena, F Sket

Affiliations

  1. Materials Division, Directorate of Technology, PINSTECH, P. O. Nilore, Islamabad, Pakistan.
  2. German Aerospace Centre - DLR, Institute of Materials Research, Linder Höhe, Cologne, Germany.
  3. RWTH-Aachen, Aachen, Germany.
  4. IMDEA Materials Institute, C/ Eric Kandel 2, Getafe, Madrid, Spain.

PMID: 25864713 DOI: 10.1111/jmi.12241

Abstract

The three-dimensional microstructure of cast AlSi12Ni and AlSi10Cu5Ni2 alloys is investigated by laboratory X-ray computed tomography, synchrotron X-ray computed microtomography, light optical tomography and synchrotron X-ray computed microtomography with submicrometre resolution. The results obtained with each technique are correlated with the size of the scanned volumes and resolved microstructural features. Laboratory X-ray computed tomography is sufficient to resolve highly absorbing aluminides but eutectic and primary Si remain unrevealed. Synchrotron X-ray computed microtomography at ID15/ESRF gives better spatial resolution and reveals primary Si in addition to aluminides. Synchrotron X-ray computed microtomography at ID19/ESRF reveals all the phases ≥ ∼1 μm in volumes about 80 times smaller than laboratory X-ray computed tomography. The volumes investigated by light optical tomography and submicrometre synchrotron X-ray computed microtomography are much smaller than laboratory X-ray computed tomography but both techniques provide local chemical information on the types of aluminides. The complementary techniques applied enable a full three-dimensional characterization of the microstructure of the alloys at length scales ranging over six orders of magnitude.

© 2015 The Authors Journal of Microscopy © 2015 Royal Microscopical Society.

Keywords: Casting; microstructure; piston alloys; tomography

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