隗健，刘乐，高素臻，张田，贾金容，王雪梅，赵引峰，韩培刚 ，张建旗
（内蒙古科技大学 材料与冶金学院，内蒙古包头 014010）
关键词：球磨；非晶合金；粒度分布；晶粒尺寸
中图分类号：TG146.2+1 文献标识码：A
摘要：在转速150转/min、球料质量比为15:1条件下对Al88Ce8Fe4合金粉末进行球磨，采用SEM、XRD、激光粒度分析仪观察和分析形貌、粒度以及物相、晶粒尺寸等变化。结果表明：粉末粒
径在球磨过程中随时间延长先增大再减小最后趋于平衡，表面枝状晶粒消失；球磨过程中未出现新物相，晶粒尺寸急剧下降并趋于10-20nm，结晶度持续降低最终在球磨32h形成纳米晶/非晶相。
Al-Ce-Fe amorphous/nano crystalline alloy prepared by ball-milling
WEI Jian, LIU Le, Gao Su-zhen, ZHANG Tian, JIA Jin-rong, WANG Xue-mei, ZHAO Yin-feng,HAN Pei-gang, ZHANG Jian-qi
(Materials and Metallurgy School，Inner Mongolia University of Science and Technology，Baotou 014010，China)
Key words：ball-milling；amorphous alloy；particle size distribution ；crystallization
Abstract：Al88Ce8Fe4 alloy powders were ball-milled at the speed of 150 r/min and the ball-to-powder weight ratio of 15:1. The microstructure, phase and grain size were examined by SEM, XRD and lase
r particle size analyzer. The results show that the particle size of the powders increased at beginning, declined in the following until at the last of milling attained a constant value monotonously. The dendrit
e grains on the particle surface as seen from the original powders disappeared, but new phases didn’t arise throughout the process of ball-milling. The degree of crystallization reduced continuously until a st
able mixture of amorphous and nano-crystallized combined particles was generated after the powders were milled for 32 hours.