史鹏忠 王强 游福仁 李文文 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：非晶铝合金 热稳定性 晶化
中图分类号：TG139+.8 文献标识码：A
摘要采用单辊甩带技术制备出的铝基非晶合金Al88Ce8Ni4，利用XRD 、TEM和DSC对非晶热稳定性和晶化行为进行了分析，结果表明，该所制备的铝合金属于完全非晶态，开始晶化温度达到（Tx）530K，其稳定性良好。晶化过程分两步进行，且晶化产物除了初生相α-Al，大多以Al-Ce和Al-Ni原子簇组成。
Study on thermal stability and crystallizationbehavior of Al88Ce8Ni4 amorphous alloys
SHI Peng-zhong, WANG Qiang,YOU Fu-ren, LI Wen-wen, ZHANG Jian-qi
Materials and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou 014010, China
Keyword: Al-based amorphous alloy; thermal stability; Crystallization
Abstract：The thermal stability and crystallization behavior of amorphous alloy Al88Ce8Ni4made by melt-spinning was investigated using XRD, TEM and DSC techniques. The results showed that complete amorphous Al88Ce8Ni4 alloy wasobtained by melt spinning fast quenching technique.The onset crystallization temperature Txof the alloy was measured as 530 K, and the good thermal stability was demonstrated by its high crystallization temperature and high activation energy, as identified from DSC. Two steps of crystallization were manifested, each of them consisting of Al-Ce and Al- Ni clusters in the respective crystallization process in addition to the primary α-Al phase.