GLASS-FORMING RANGES OF MECHANICALLY ALLOYED POWDERS

The glass-forming ranges in mechanically alloyed TM-Zr alloys (where TM is a transition metal) have been determined by means of magnetization and crystallization experiments, by Mossbauer spectroscopy, and by investigating the superconducting properties. Glass formation by mechanical alloying is possible in the central composition range, i.e. from 30-78 at.% iron, 27-85 at.% nickel and 27-92 at.% cobalt. For TM-rich or zirconium-rich composition, two-phase regions exist between the primary phases and the amorphous phase. It is shown that the measurement of the physical properties allows a more accurate determination of this than does X-ray diffraction.