Abstract
The change in structure of an amorphous Fe-P-C alloy during ageing was examined using small-angle X-ray scattering (SAXS) measurement and transmission electron microscopy. The SAXS intensity was related to two different types of scattering regions depending on ageing time and temperature. The major scattering was from the crystalline particles, which had two-phase lamella structures. The average thickness of the lamellae remained constant at about 5 nm during ageing. The interlamella distance was three to five times the lamellar thickness in the regular packing region. Another minor scattering was interpreted as being caused by the local ordering of atomic configuration in the amorphous state. The average size of the scattering region was 1.8 to 2.4 nm and quite similar to the critical range proposed by Giessen and Wagner, beyond which the shortrange order disappears.
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Osamura, K., Shibue, K., Shingu, P.H. et al. Small-angle X-ray scattering study on the structure and crystallization of amorphous Fe-P-C alloy. J Mater Sci 14, 945–952 (1979). https://doi.org/10.1007/BF00550726
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DOI: https://doi.org/10.1007/BF00550726