Crystallization Behavior Of A Mechanically Alloyed Amorphous Fe80zr8b11cu1 Alloy

An amorphous alloy of Fe80Zr8B11Cu1 has been prepared by mechanical alloying, milled for 72 h, and annealed in the temperature range from 673 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 amorphous base. Upon further increasing the annealing temperature to 1173 K, in addition to the metastable alpha-Fe (Zr,B) phase, a ZrB2 phase appears. Furthermore, the results from Mossbauer spectroscopy reveal that there are two different magnetic areas in these amorphous phases at different annealing temperatures. (C) 1996 American Institute of Physics.