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Crystallization behaviour of Fe−(Nb,Cu)−Si−B metallic glasses

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Abstract

The crystallization behaviour and Curie temperatures of Fe−(Nb,Cu)−Si−B metallic glasses were studied by means of differential scanning calorimetry (DSC), thermomagnetic gravimetry (TMG) and X-ray diffraction. The agreement between the DSC and TMG results was complete. For all Fe−Si−B amorphous alloys, two-peak crystallization was observed with the primary crystallization of α-Fe(Si) followed by eutectic crystallisation. The effects of Cu and Nb additions on the crystallization behaviour and on the activation energies for each stage of the crystallization process of Fe−Si−B glass were investigated.

Zusammenfassung

Mittels Differential-Scanningkalorimetrie (DSC), thermomagnetischer Gravimetrie (TMG) und Röntgendiffraktion wurde das Kristallisationsverhalten und die Curie-Punkte der metallischen Gläser Fe−(Nb,Cu)−Si−B untersucht. Zwischen DSC- und TMG-Ergebnissen besteht volle Übereinstimmung. Bei allen amorphen Fe−Si−B-Legierungen wurden zwei Peaks Kristallisation beobachtet, wobei die primäre Kristallisation von α-Fe(Si) von einer eutektischen Kristallisation gefolgt wird. Der Einfluß des Zusatzes von Cu und Nb auf das Kristallisationsverhalten und auf die Aktivierungsenergien für jede einzelne Stufe des Kristallisationsprozesses von Fe−Si−B-Gläsern wird untersucht.

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Authors and Affiliations

  1. Department of Chemistry, University of Sofia, 1126, Sofia, Bulgaria

    T. Spassov & S. Budurov

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  1. T. Spassov
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  2. S. Budurov
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Spassov, T., Budurov, S. Crystallization behaviour of Fe−(Nb,Cu)−Si−B metallic glasses. Journal of Thermal Analysis 45, 1557–1563 (1995). https://doi.org/10.1007/BF02547449

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  • DOI: https://doi.org/10.1007/BF02547449

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