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Study of the kinetics and products of the devitrification process of mechanically amorphized Fe70Zr30 alloy

AuthorsManchón-Gordón, Alejandro F.; Ipus, Jhon J.; Blázquez, Javier S.; Conde, Clara F.; Conde del Campo, Ana ; Svec, P.
KeywordsFe-Zr intermetallics
Amorphous alloys
Crystallization kinetics
Anocrystalline alloys
Mössbauer spectroscopy
Issue Date2020
PublisherElsevier BV
CitationJournal of Alloys and Compounds 825 (2020)
AbstractDevitrification of mechanically alloyed amorphous FeZr at. % compound consists on a two-step process: amorphous → amorphous + bcc Fe + FeZr → FeZr + FeZr. This sequence is inferred from the evolution of the Mössbauer spectra, the thermomagnetic experiments and the X-ray diffraction (XRD) patterns. Hyperfine parameters for both intermetallics have been obtained from Mössbauer spectroscopy in correlation with the phase identification from XRD results. The broadening of the stable compositional range of FeZr intermetallic above 1000 K is responsible for a strong dependence of the phase fractions on heating and cooling rates. Despite the overlapping of the two processes involved in the devitrification, the individual Avrami exponents of each one have been estimated.
Publisher version (URL)
Identifiersdoi: 10.1016/j.jallcom.2020.154021
issn: 0925-8388
Appears in Collections:(ICMS) Artículos

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