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Journal of Materials Science

, Volume 30, Issue 11, pp 2921–2929 | Cite as

Transformation of the quasicrystalline phase Al-Cr-Fe induced by rapid solidification

  • A. Ziani
  • G. Michot
  • A. Pianelli
  • A. Redjaïmia
  • C. Y. Zahra
  • A. M. Zahra
Papers

Abstract

A quasicrystalline phase, Q, with icosahedral symmetry was detected by X-ray diffraction and transmission electron microscopy in Al-3Cr-xFe (x=0 1 or 3 at %) alloys elaborated by hot extrusion of rapidly solidified powders. Chemical microanalysis showed the average composition of this phase to be 75 ± 0.5% Al, 12 ± 1%Cr, 12 ± 1% Fe. Annealing treatments led to its transformation into the equilibrium phases Al13Cr2 and Al13Fe4, directly at high temperature, or through a metastable and unknown phase, X, at intermediate temperature. This transformation was followed by X-ray diffraction, calorimetry and in situ electron microscopy. The convergent-beam technique was used for characterization of the X phase.

Keywords

Polymer Microscopy Electron Microscopy Transmission Electron Microscopy Calorimetry 
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.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • A. Ziani
    • 1
  • G. Michot
    • 1
  • A. Pianelli
    • 1
    • 2
  • A. Redjaïmia
    • 1
    • 3
  • C. Y. Zahra
    • 4
  • A. M. Zahra
    • 4
  1. 1.Ecole des Mines de Nancy, Parc de SauruptURA C.N.R.S. 155Nancy CedexFrance
  2. 2.Ecole des Mines de Nancy, Parc de SauruptURA C.N.R.S. 159Nancy CedexFrance
  3. 3.Ecole des Mines de Nancy, Parc de SauruptURA C.N.R.S. 1402Nancy CedexFrance
  4. 4.Centre de Thermodynamique et MicrocalorimétrieUPR C.N.R.S. 7461MarseilleFrance

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