A series of quasi-equi-atomic bcc
Fe100−xCrx alloys
(40.5≤x≤52.6) was investigated with Mössbauer spectroscopy. The Debye temperature,
ΘD, was
determined from the spectra measured in the temperature range of 30–300 K. It was revealed that the values of
ΘD found here increase
linearly with x, but both the values and their rate of increase are slightly smaller than those recently found for
σ-Fe–Cr alloys of similar composition. The small difference in
ΘD-value between the two phases do not reflect the huge crystallographic and mechanical
differences between them.