Investigation of Structure and Properties of the Al–Y–Ni–Co–Cu Metallic Glasses

The present paper reports the effect of partial replacement of Ni by Cu in the Al₈₅Y₈Ni₅Co₂ alloy. The studied alloys were produced by rapid solidification. Glass-formation, crystallization behavior, and stability of the supercooled liquid were studied by x-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. Partial replacement of Ni by Cu in the Al₈₅Y₈Ni₅Co₂ metallic glass caused formation of the nanoscale α–Al particles and resulted in a decrease in the crystallization temperature and disappearance of the supercooled liquid.