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Study of a sigma-phase formation in an equiatomic Fe-V alloy

Authors: B. F. O. Costa, J CieĊ›lak and S M Dubiel

Ref.: Journal of Physics: Conference Series 217, 12077-12081 (2010)

Abstract: Kinetics of the alpha- to sigma-phase transformation in an equiatomic Fe-V alloy has been studied by Mossbauer Spectroscopy and X-ray diffraction. The B2 superstructure seems to form prior to the precipitation of the sigma-phase. The results obtained in this study give evidence that in the investigated interval, the transformation kinetics strongly depends on temperature. The kinetics of the alpha- to sigma-phase transformation, as determined from the temperature dependence of the average hyperfine field derived from the Mossbauer spectra, has been quantitatively described in terms of the Johnson-Mehl-Avrami equation, from which the kinetics parameters n and k have been determined.

DOI: 10.1088/1742-6596/217/1/012077