Glass formation in mechanically alloyed transition-metal-Zr alloys
- 1 October 1987
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 56 (4), 443-448
- https://doi.org/10.1080/13642818708221330
Abstract
A large number of TM-Zr alloys (where TM is a transition metal) have been produced by mechanical alloying from crystalline powders of the elements. The first milled products showed a layered microstructure of the powder particles, which became finer with increasing milling time. Longer milling led to amorphous powder. The formation of amorphous TM-Zr (TM ═ Cu, Ni, Co, Fe, Mn) was monitored by X-ray diffraction and differential thermal analysis. Amorphous V-Zr or Cr-Zr could not be produced. The experimental results are compared with the glass-forming ability predicted by free-enthalpy diagrams calculated from the Miedema model. The amorphization is found to depend strongly on a large negative heat of mixing.Keywords
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