Crystallization behavior of Fe62Nb8−xZrxB30 bulk amorphous alloy

The effect of Zr addition on the glass-forming ability has been investigated in the Fe62Nb8−xZrxB30 bulk amorphous alloy system by thermal (differential scanning calorimeter (DSC) and differential thermal analysis (DTA)) and structural (X-ray diffractometry (XRD) and high-resolution transmission ele...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2004-07, Vol.375-377, p.789-793
Main Authors: Shapaan, M., Lábár, J., Lendvai, J., Varga, L.K.
Format: Article
Language:English
Subjects:
Bulk glass-forming ability
Crystallization
Differential thermal analysis
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Summary:The effect of Zr addition on the glass-forming ability has been investigated in the Fe62Nb8−xZrxB30 bulk amorphous alloy system by thermal (differential scanning calorimeter (DSC) and differential thermal analysis (DTA)) and structural (X-ray diffractometry (XRD) and high-resolution transmission electron microscope (HRTEM)) analysis. Zr addition reduces the bulk glass-forming ability (BGFA) and changes the microstructure obtained after crystallization. The Kissinger method was used to estimate the activation energy (Ea) of crystallization. A strong correlation between Ea and BGFA parameters was observed. Among the crystallization products the metastable Fe23B6 phase appeared, which is probably a consequence of the Nb content in the alloy.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2003.10.182