Article Title

Thermal stability and glass-forming ability of Y-Ce-Co-Al bulk metallic glasses

Authors

Jun Li, Institute of Materials, Shanghai University, Shanghai 200072, China
Xueshan Xiao, Institute of Materials, Shanghai University, Shanghai 200072, China
Yuanda Dong, Institute of Materials, Shanghai University, Shanghai 200072, China

Corresponding Author

Jun Li^*

Institute of Materials, Shanghai University, Shanghai 200072, China

Recommended Citation

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.

Keywords

bulk metallic glass; glass forming ability; thermal stability; Y-based alloys

Abstract

The thermal stability and glass-forming ability of Y_{56- x}Ce _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.