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Structural and phase analysis of rapidly solidified Al-Fe alloys

  • I. I. Tashlykova-Bushkevich
  • E. S. Gut’ko
  • V. G. Shepelevich
  • S. M. Baraishuk
Article

Abstract

The structure and phase composition of lightly-doped Al-Fe alloys obtained by ultrarapid quenching from the melt are investigated. The surface of foils was studied using scanning electron microscopy, atomic-force microscopy, and Rutherford backscattering technique. The variation in the phase composition of alloys during annealing was studied by x-ray diffraction technique and by resistivity and microhardness measurements. The Al-Fe alloys have microcrystalline structure with a nonuniform iron content in the near-surface region of the samples. A correlation of depth profiles of iron and phase composition of the foils is observed. It is found that decomposition of the supersaturated α solid solution proceeds in the temperature range 250–350°C. As the annealing temperature increases, a metastable Al6Fe phase is precipitated. In the range 300–500°C, the metastable Al6Fe phase decomposes, and a stable Al3Fe phase is precipitated.

Keywords

Unit Cell Parameter Surface Investigation Iron Atom Neutron Technique Interplanar Spacing 
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

© MAIK Nauka 2008

Authors and Affiliations

  • I. I. Tashlykova-Bushkevich
    • 1
  • E. S. Gut’ko
    • 2
  • V. G. Shepelevich
    • 2
  • S. M. Baraishuk
    • 3
  1. 1.Belarusian State University of Informatics and RadioelectronicsMinskBelarus
  2. 2.Belarusian State UniversityMinskBelarus
  3. 3.Belarussian State Pedagogical UniversityMinskBelarus

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