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Phase composition investigations of the Nd-Fe alloys processed by various methods

Pawlik K., Wysłocki J., Olszewski J., Bodak O., Pawlik P.

Nukleonika

2004

Vol. 49,suppl.3

27-31

Abstract In the paper, the phase composition changes for the series of Nd10+xFe90 x (x = 0; 0.5; 1; 1.5; 2; 2.5; 3; 3.5; 4) binary alloys, produced by long time annealing and rapid solidification methods were investigated. X-ray diffractometry and Mössbauer spectroscopy were used to determine the phase composition of the alloys. These structural investigations revealed the existence of two crystalline phases in the long time annealed samples: bcc á-Fe and rhombohedral Nd2Fe17 of the Th2Zn17-type structure. Furthermore, the single phase region was observed for the Nd concentration above 12 at.%. For the rapidly solidified ribbon samples, a low volume fraction of the alfa-Fe and the crystalline phase of hexagonal symmetry were detected.