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  • Growth mechanism of highly twinned ▫$Al_{13}Fe_4$▫ dendrites obtained from a rapidly solidified Al-5at.% Fe melt
    Dubaux, D. ...
    We report the formation of large and highly twinned dendrites of the Al13Fe4 approximant phase embedded in an fcc Al-rich matrix. Using a rapid cooling technique, the approximant appears as a 10-fold ... dendrite. Within each arm, all grains share a common [010] direction. The grain distributions within the arm are quite complex and a single dendrite arm can contain up to four different orientations. Using several techniques, including Electron Back-Scattered Diffraction (EBSD) and Transmission Electron Microscopy (TEM), it has been possible to identify three types of twins, namely {100}, {001} and {201̄} twins. From these observations and previous reports, we propose a growth mechanism to explain the formation of such specific 10-fold motifs. It corresponds to the heteroepitaxial growth of the Al13Fe4 approximant from a well-facetted decagonal Al–Fe quasicrystalline seed.
    Source: Intermetallics [Elektronski vir]. - ISSN 1879-0216 (Vol. 164, article no. 108111, Jan. 2024, str. 1-7)
    Type of material - e-article ; adult, serious
    Publish date - 2024
    Language - english
    COBISS.SI-ID - 172003843

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S0966979523002911?via%3Dihub
    DOI

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