CRYSTALLIZATION BEHAVIOR OF A MECHANICALLY ALLOYED AMORPHOUS FE80ZR8B11CU1 ALLOY

An amorphous alloy of Fe80Zr8B11Cu1 has been prepared by mechanical al loying, milled for 72 h, and annealed in the temperature range from 67 3 to 1173 K. The crystallization behavior of this sample at different annealing temperatures has been investigated by x-ray diffractometry, electron microscopy, and Mossbauer spectroscopy. With the increase of annealing temperature, about a 15 nm bcc phase is formed in the amorph ous base. Upon further increasing the annealing temperature to 1173 K, in addition to the metastable alpha-Fe (Zr,B) phase, a ZrB2 phase app ears. Furthermore, the results from Mossbauer spectroscopy reveal that there are two different magnetic areas in these amorphous phases at d ifferent annealing temperatures. (C) 1996 American Institute of Physic s.