Phase Coexistence In The Fe-nd System

Phase coexistence in the Fe-Nd binary system has been investigated by metallography, x-ray diffractometry, electron microprobe analysis, and differential thermal analysis. The technique of diffusion couples also has been used. The Fe17Nd2 compound is peritectically formed at 1185° C and the eutectic reaction is L → Fe17Nd2 + Nd*, occurring at 670° C; the Fe2Nd phase was not found. A double thermal arrest is observed at the eutectic temperature and its origin is not well understood yet. © 1989 Springer-Verlag New York Inc.111838