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Keywords
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Mechanical alloying, Fe-based alloy, X-ray diffraction, Annealing, Magnetic properties.
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Abstract
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In this study, we investigate the structural and magnetic properties of nanocrystalline (Fe55Cu20Al25)90B10 powders produced by mechanical alloying. We employ various characterization techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron dispersive X-ray spectroscopy (EDS), and vibrating sample magnetometry (VSM) to analyze these properties. The XRD analysis reveals that after 80 h of milling, the powders undergo a transformation, resulting in the formation of a bcc-iron-based solid solution structure. After 16 h of milling, the average grain size is about 8.1 nm. Additionally, the maximum saturation magnetization reaches around 100.85 emu/g. The annealed sample exhibits structural ordering, as evidenced by the presence of Fe and Cu crystal phases, along with an increase in coercivity. The prepared alloy exhibits soft magnetic properties compared to previously investigated mechanically
alloyed FeAl-based powders.
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