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Microstructural evolution of Al-Fe powder mixtures during high-energy ball milling

TitoloMicrostructural evolution of Al-Fe powder mixtures during high-energy ball milling
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione1998
AutoriCardellini, F., Contini V., Gupta R., Mazzone G., Montone Amelia, Perin A., and Principi G.
RivistaJournal of Materials Science
Volume33
Paginazione2519-2527
ISSN00222461
Parole chiaveAluminum, Annealing, Ball milling, Composition effects, Differential scanning calorimetry, Interdiffusion (solids), Iron alloys, Iron aluminide, Metallographic microstructure, Mossbauer spectroscopy, Powder metals, Solid solutions, Thermal effects, X ray diffraction analysis
Abstract

High-energy ball milling has been performed on FexAl1-x powder mixtures with x = 0.75, 0.50, 0.25 and 0.20. X-ray diffraction, Mössbauer spectroscopy and electron microscopy have been used to characterize the samples milled for different times and annealed in a differential scanning calorimeter. It is found that, during milling, there is diffusion of both elements into each other, with a prevalence of iron diffusion into aluminium, at least in the early stages of the process. This behaviour is more pronounced in the aluminium-rich samples. The growth of the Fe(Al) and Al(Fe) solid solutions has been observed for x ≥ 0.5, different from the lower iron concentrations where the Fe(Al) phase has not been detected. The annealing of pre-milled samples favours the formation, depending on the sample composition and on the annealing temperature, of intermetallic phases such as Fe3Al, FeAl, Fe2Al5 and FeAl3. © 1998 Chapman & Hall.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0032074701&partnerID=40&md5=d9afc7e402119c950e249a400befd062
Citation KeyCardellini19982519