Multicomponent Mg-based alloys were solidified by melt spinning and by copper mould casting, obtaining ribbons and cone shaped samples with maximum diameter of 4 mm. Fully amorphous samples were obtained for Mg60Ni9Cu9Zn5Y6 Ag-5 Gd-6 ingot up to the maximum diameter, but crystals embedded in an amorphous matrix have been found for Mg51Ni11Cu13Zn4Y5Ag7 Gd-9 when cone samples are produced. Therefore, a reduction of the Mg content in the alloy produces a decrease in the GFA. The stability of the amorphous phase and the glass transition temperature were determined by calorimetric measurements. Vickers hardness tests were performed on as cast amorphous samples.
Glass-formation and hardness of Mg-based multicomponent alloys
RIZZI, Paola;BARICCO, Marcello
2008-01-01
Abstract
Multicomponent Mg-based alloys were solidified by melt spinning and by copper mould casting, obtaining ribbons and cone shaped samples with maximum diameter of 4 mm. Fully amorphous samples were obtained for Mg60Ni9Cu9Zn5Y6 Ag-5 Gd-6 ingot up to the maximum diameter, but crystals embedded in an amorphous matrix have been found for Mg51Ni11Cu13Zn4Y5Ag7 Gd-9 when cone samples are produced. Therefore, a reduction of the Mg content in the alloy produces a decrease in the GFA. The stability of the amorphous phase and the glass transition temperature were determined by calorimetric measurements. Vickers hardness tests were performed on as cast amorphous samples.
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