Structural and phase transformations during heat treatment of the Fe(71.4)Si(14.3)C(14.3) amorphous alloy prepared by mechanical alloying
Differential scanning calorimetry, X-ray diffraction, Mössbauer spectroscopy of 57 Fe nuclei, magnetic measurements, and different heat treatments have been used to study the sequence and mechanisms of solid-state reactions in the Fe-Si-C amorphous alloy in the course of the structure transition to...
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Veröffentlicht in: | Physics of metals and metallography 2010-12, Vol.110 (6), p.542-552 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Differential scanning calorimetry, X-ray diffraction, Mössbauer spectroscopy of
57
Fe nuclei, magnetic measurements, and different heat treatments have been used to study the sequence and mechanisms of solid-state reactions in the Fe-Si-C amorphous alloy in the course of the structure transition to equilibrium. Three stages of structural and phase transformations have been found; these are the structural relaxation, formation of an Fe
5
SiC silicocarbide, and its decomposition. It has been shown that the second and third stages occur during isochronous annealing within sufficiently narrow temperature ranges of 380–405 and 530–555°C, respectively. The kinetics of the decomposition of the metastable Fe
5
SiC silicocarbide and the formation of the ordered Fe-Si alloy during isothermal annealing has been studied. |
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ISSN: | 0031-918X 1555-6190 |
DOI: | 10.1134/S0031918X10120045 |