Li Jun, Xiao Xueshan, Dong Yuanda. Thermal stability and glass-forming ability of Y-Ce-Co-Al bulk metallic glasses, Int. J. Miner. Metall. Mater., 14 (2007), No. 7, p. 23-25.
bulk metallic glass; glass forming ability; thermal stability; Y-based alloys
The thermal stability and glass-forming ability of Y56- xCe xCo20Al24 ( x=15, 20, 25, 28, 38, 41, 44) bulk metallic glasses with a diameter of 5 mm were investigated by differential scanning calorimetry and X-ray diffraction. The results show that the thermal stability of the alloys decreases with the addition of Ce. It has the best glass-forming ability when x=25, whose calculated values can reach about 30 mm in diameter. The effect of Ce element could be explained on the view of Miedema’s theory and electronegativity difference of amorphous alloys.