Fe73Al4Ga2P12B4Si4M1非晶的制备与晶化研究Preparation and crystallization of Fe73Al4Ga2P12B4Si4M1 amorphous alloys
傅明喜,周宏军,赵江
摘要(Abstract)：
用单辊法制备了Fe73Al4Ga2P12B4Si4M1(M为Cu,Nb,Ni)非晶薄带,并用XRD,DSC,SEM对其非晶形成能力、晶化方式和晶粒形貌尺寸进行分析。结果表明,在Fe74Al4Ga2P12B4Si4中加入Cu后,玻璃转变温度(Tg)和晶化温度(Tx)消失,只有一个晶化峰,而在其后的退火过程中为二级晶化,分析可能是Tg和Tx重叠消失,用Nb和Ni替代后,合金的Tx和Tg都升高,而其过冷液相区减小,其晶化方式均为二级晶化。用扫描电镜观察原始试样晶化后颗粒呈菊花状,颗粒较大;用Cu替代晶粒尺寸明显减小,而且含Cu化合物呈网络状;用Nb替代之后,颗粒呈蘑菇状,晶粒也有一定程度的减小;用Ni替代后,晶化颗粒呈针状,颗粒较为细小。
关键词(KeyWords)： 铁基非晶;非晶形成能力;晶化;纳米晶
基金项目(Foundation): 江苏省教育厅高校科学研究项目(03KJD430067)
作者(Author): 傅明喜,周宏军,赵江
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