The thermal stability and glass-forming ability of Y56-xCexCo20Al24 (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 elec- tronegativity difference of amorphous alloys.
Jun Li, Xueshan Xiao, and Yuanda Dong Institute of Materials, Shanghai University, Shanghai 200072, China
Zr52.5Al10Ni10Cu15Be12.5 体积的热坚硬行为金属性的玻璃用一个热宏坚硬测试者和扫描电子显微镜学(SEM ) 在 T x (发作结晶化温度) 上从周围的温度被学习到温度。结果证明 Zr52.5Al10Ni10Cu15Be12.5 体积的热坚硬行为金属性的玻璃能被分类进 4 个地区：坚硬几乎线性地随温度的增加在减少的玻璃质的地区，坚硬是将近未改变的粘弹性的在地区，粘滞坚硬快速在趋于向的流动地区与温度，和坚硬严厉地在增加的结晶化地区接近零。为金属性的眼镜也是的体积的高温度变丑行为和容易的可处理的变丑区域根据热 marco 坚硬讨论了。
