Characterization of Low-Symmetry Structures from Phase Equilibrium of Fe-Al System—Microstructures and Mechanical Properties

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  • Additional Information
    • Publication Information:
      MDPI AG, 2015.
    • Publication Date:
      2015
    • Abstract:
      Fe-Al intermetallic alloys with aluminum content over 60 at% are in the area of the phase equilibrium diagram that is considerably less investigated in comparison to the high-symmetry Fe 3 Al and FeAl phases. Ambiguous crystallographic information and incoherent data referring to the phase equilibrium diagrams placed in a high-aluminum range have caused confusions and misinformation. Nowadays unequivocal material properties description of FeAl 2 , Fe 2 Al 5 and FeAl 3 intermetallic alloys is still incomplete. In this paper, the influence of aluminum content and processing parameters on phase composition is presented. The occurrence of low-symmetry FeAl 2 , Fe 2 Al 5 and FeAl 3 structures determined by chemical composition and phase transformations was defined by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) examinations. These results served to verify diffraction investigations (XRD) and to explain the mechanical properties of cast materials such as: hardness, Young’s modulus and fracture toughness evaluated using the nano-indentation technique.
    • File Description:
      application/pdf
    • ISSN:
      1996-1944
    • Online Access:
      https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50c4cfdd7ba8a6b48d02a343cc9fb58b
      http://www.mdpi.com/1996-1944/8/3/914/pdf
    • Rights:
      OPEN
    • Accession Number:
      edsair.doi.dedup.....50c4cfdd7ba8a6b48d02a343cc9fb58b