Evolution of the Multiscale Hierarchical Structure of Defects in a Melt-Quenched Fe70Cr15B15(Sn) Alloy during Low-Temperature Annealing
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Abstract—The evolution of the multiscale hierarchical structure of an amorphous melt-quenched Fe70Cr15B15(Sn) alloy with a low tin content is studied. The fractal ordering of the alloy ribbon surface indicates the presence of localized structural states, which are large-scale recrystallization centers. The tin microalloying of the ribbon contact surface changes the topology of the localized states, which leads to a change in the scenario of transformations and to a decrease in the phase-transformation temperature. The character of structural ordering is reflected on the shape of fractal dimension spectra. The fractal dimension is reduced at the stages of vitrification and nanocrystallization.
We thank Prof. A.M. Glezer (Bardin Central Research Institute of Ferrous Metallurgy) for supplying the samples, B.N. Grudin and V.S. Plotnikov (Electron Microscopy Laboratory, Far East Federal University), and A.V. Gerasimenko (Institute of Chemistry, Far East Branch, Russian Academy of Sciences) for performing the experiments.
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