Recent studies of mechanically alloyed Fe-Cu powder mixtures have suggested differences in the local magnetic environment of iron atoms. For a more accurate definition of this point, ball-milled Cu 7 0 Fe 3 0 and Cu 5 0 Fe 5 0 alloys were investigated by Mossbauer spectroscopy in the temperature range 4.2-300 K. The low temperature Mossbauer spectra exhibit a broad magnetic pattern typical of a defect structural configuration. The magnetic splitting strongly decreases with increasing temperature, especially in the case of Cu 7 0 Fe 3 0 alloy. But even for this composition there is, at room temperature, an unresolved magnetic pattern. Applying a magnetic field of 3 T, parallel to γ rays, at 4.2 K a rotation of all magnetic moments along the external field is observed. The samples behave as an alloy with continuously distributed local fields.