We analyze the thermal stability and kinetic parameters of crystallization of Fe82Nb2B14REM2 (REM = Y, Gd, Tb, or Dy) amorphous metallic alloys by the method of differential scanning calorimetry. It is shown that the alloys based on iron crystallize in two stages. We compute the activation energy of both stages of crystallization of amorphous alloys according to the Kissinger, Ozawa, and Augis–Bennett models. The procedure of do** of the Fe84Nb2B14 alloy with rare-earth metals leads to an increase in temperature, in the activation energy of crystallization, and in the frequency factor. The decrease in the crystallization rate constant of alloys caused by do** with rare-earth metals reveals their resistance to temperature treatment.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 55, No. 6, pp. 131–138, November–December, 2019.
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Danylyak, MO.М., Boichyshyn, L.М. Thermal Stability of Fe82Nb2B14REM2 Amorphous Alloys. Mater Sci 55, 921–929 (2020). https://doi.org/10.1007/s11003-020-00388-z
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DOI: https://doi.org/10.1007/s11003-020-00388-z