Bulk amorphous Al75V12.5Fe12.5-xCux alloys fabricated by consolidation of mechanically alloyed amorphous powders
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Hydraulic press was used to produce bulk amorphous Al75V12.5Fe12.5−xCux (x = 0, 6.25, and 12.5) (at.%) alloy by consolidation of mechanically alloyed amorphous powder. The as-milled powders and bulk alloy were examined by X-ray diffraction, transmission electron microscopy and differential scanning calorimetry. The glass-forming ability was evaluated in accordance with the milling time. The results show that the glass-forming ability of the mechanical-alloyed Al75V12.5Fe12.5−xCux powders decreases with the increase of x. The onset crystallization temperatures (Tonsetx ) of the three powders are 749 K, 771 K and 712 K, respectively. The results also indicate that the quality of consolidation is very good and the product’s Vickers microhardness is relatively high (821–927 HV).
Journal of Alloys and Compounds
Materials Engineering not elsewhere classified