Mossbauer spectroscopy of the Zr-rich region in Zr-Nb-Fe alloys with low Nb content

Intermetallic phases and solid solutions in the Zr-rich region of the Zr-Nb -Fe system with low Nb content are studied by Mossbauer spectroscopy comple mented with X-ray diffraction, optical and scanning electron microscopy and electron microprobe analysis. The phases found in each sample were those e xpected from the corresponding binary Zr-Fe system. Furthermore, one of the samples showed a ternary cubic Ti2Ni type phase with a similar stoichiomet ry to the tetragonal Zr2Fe compound. Mossbauer parameters were suggested to this phase (IS: -0.12 mm/s, QS: 0.30 mm/s), to the bcc Zr(beta) phase (IS: (-0.11 +/- 0.01) mm/s, QS: (0.23 +/- 0.02) mm/s), and to the hcp Zr(beta(T )) phase (IS: (0.24 +/- 0.02) mm/s, QS: (0.45 +/- 0.02) mm/s).