Abstract
Crystallization of soft magnetic Fe-Si-B glasses was investigated by transmission electron microscopy and X-ray diffraction. Electron micrographs of the successive crystallization stages of some Fe-Si-B glasses were obtained and the morphology variations for different alloy compositions were determined. The compositional dependence of the crystallization mode exhibited by the Fe-Si-B glasses was analysed, and on this basis some suggestions about crystallization rules in these glasses are proposed. Two kinds of iron—silicon phases occurred, depending on the Fe-Si-B alloy composition: bcc Fe(Si) solid solution and an ordered solid solution on the structural basis of Fe3Si iron suicide. It is suggested that the metastable Fe3B phase (observed during crystallization of only few glasses) was not a simple consequence of boron content. Crystallization of the Fe3B phase was related to the formation of the iron—silicon phase which was produced during the first crystallization stage.
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Załuska, A., Matyja, H. Crystallization characteristics of amorphous Fe-Si-B alloys. J Mater Sci 18, 2163–2172 (1983). https://doi.org/10.1007/BF00555011
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DOI: https://doi.org/10.1007/BF00555011