Abstract
Amorphous alloys Cu 50Pr 30Ni 10Al 10−2 x Ti x B x ( x = 0, 0.05, 0.10, 0.15, 0.16 at.%) have been obtained by melt-spinning technology. Results show that Cu 50Pr 30Ni 10Al 9.9Ti 0.05B 0.05 melt-spun ribbon at a surface velocity of 38.5 m/s is fully amorphous, while partial amorphous structure can be obtained with further additions. Differential scanning calorimeter (DSC) analyses indicate that minor addition of 0.05% Ti and 0.05% B can improve the thermal stability of melt-spun amorphous alloys, while further additions show reverse influence. The effects of Ti and B are that minor addition increases the tendency of new phases formation, and appropriate addition can suppress the formation of crystalline phases.
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