Crystallization of Fe83B17 amorphous alloy by electric pulses produced by a capacitor discharge

Konstantinos Georgarakis, Dina V. Dudina, Vyacheslav I. Mali, Alexander G. Anisimov, Natalia V. Bulina, Alberto Moreira Jorge, Alain R. Yavari

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    Heating of conductive materials by electric current is used in many technological processes. Application of electric pulses to metallic glasses induces their fast crystallization, which is an interesting and complex phenomenon. In this work, crystallization of the Fe83B17 amorphous alloy induced by pulses of electric current produced has been studied using X-ray diffraction and transmission electron microscopy. Ribbons of the alloy were directly subjected to single pulses of electric current 250 µs long formed by a capacitor discharge. As the value of ∫I2dt was increased from 0.33 to 2.00 A2 s, different crystallization stages could be observed. The crystallization began through the formation of the nuclei of α-Fe. At high values of ∫I2dt, α-Fe and tetragonal and orthorhombic Fe3B and Fe23B6 were detected in the crystallized ribbons with crystallites of about 50 nm. Thermal annealing of the ribbons at 600 °C for 2 min resulted in the formation of α-Fe and tetragonal Fe3B. It was concluded that pulses of electric current produced by a capacitor discharge induced transformation of the Fe83B17 amorphous phase into metastable crystalline products.

    Original languageEnglish
    Pages (from-to)1565-1572
    Number of pages8
    JournalApplied Physics A: Materials Science and Processing
    Volume120
    Issue number4
    DOIs
    Publication statusPublished - 2015 Jul 21

    ASJC Scopus subject areas

    • Materials Science(all)
    • Chemistry(all)

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