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The glass formation was investigated in the melt-spun Al-rich AI-Co-Y alloys by the microstructure evolution. The best glass former Al_(88)Co_5Y_7 with the thickness of 230 #m was found,and its glass forming ability(GFA) was higher than that of previously reported AI88Co4Y8 alloy.This result indicates that GFA is strongly sensitive to the alloy composition in the system.The phase selection method is an effective way to locate the optimum glass formation composition rather than Trg andΔT_x parameters.
The glass formation was investigated in the melt-spun Al-rich AI-Co-Y alloys by the microstructure evolution. The best glass former Al_ (88) Co_5Y_7 with the thickness of 230 # m was found, and its glass forming ability (GFA ) was higher than that of previously reported AI88Co4Y8 alloy.This result indicates that GFA is strongly sensitive to the alloy composition in the system. The phase selection method is an effective way to locate the optimum glass formation composition rather than Trg and ΔT_x parameters.