Partial amorphization of Cu-Zr-Ti alloy by high pressure torsion

An experiment was conducted to produce impurity free [Cu.sub.60][Zr.sub.20][Ti.sub.20] metallic glass using the high-pressure torsion (HPT) technique. Disk-shape specimen of composition [Cu.sub.60][Zr.sub.20][Ti.sub.20] with a diameter of 10mm and thickness of about 200 [mu]m was produced by HPT, which observed that the deformation during the HPT process created a detectable amount of amorphous phase in the top layer of the disk.