Presence of έ and ε crystal structures in rapidly solidified intermetallic compound Ni5Ge3

Abstract The congruently melting, single phase intermetallic Ni5Ge3 has been subject to rapid solidification via drop-tube processing wherein powders, with diameters between> 850 and 150 µm, are produced. At low cooling rates (> 850 µm diameter particles,  850 µm fraction showing random grain orientation. However, grain orientation in plate & lath structure from 300 to 212 µm fraction displaying the distribution predominance of low angle grain boundaries.