On the correlation between glass-forming tendency and liquidus temperature in metallic alloys

Abstract

It is noted that the glass-forming tendency in alloys, in which there is only small miscibility in the equilibrium crystalline phases, generally increases with negative departure ΔT of the liquidus temperature from the ideal solution melt liquidus T 1 o. For example, when quenched at rates of ∼10 6 deg C/sec to temperatures below T g, an AB alloy at concentration x B = 0.15 atom fraction is likely to form a glass if ΔT/ T° ⩾ 0.10. However, the correlation apparently fails for the binary P alloys. This failure may be associated in some way with the relatively high volatility of P.