Abstract
Mg₆₅Cu2₂₅Y₁₀ ribbons were produced by melt spinning. Their microstructure was investigated in its as-cast condition, after pressing under 0.5 GPa for 5 min under different temperatures – RT, 50, 100, 150, and 200 °C – and after 5-minute exposure to the above temperatures without pressing. The microstructure was characterized by means of XRD, DSC, HRSEM, and HRTEM. XRD and DSC studies showed that the as-cast material had an amorphous character and that the material crystallized during exposure to temperature with or without applying stress. HRTEM revealed that the as-cast Mg₆₅Cu₂₅Y₁₀, although known to be one of the best glass formers, is nano-crystalline rather than amorphous.

Key words
microstructure, melt spinning, metallic glass, Mg₆₅Cu2₂₅Y₁₀

Full text (365 KB)