非晶合金条带Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9的晶化动力学研究（英文）  

Crystallization kinetics study for amorphous ribbon of Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9

作　　者：李晓静[1] 余东满[1] 

机构地区：[1]河南工业职业技术学院,河南省柔性制造工程实验室,河南南阳473009

出　　处：《机床与液压》2016年第18期93-96,115,共5页Machine Tool & Hydraulics

摘　　要：采用差式扫描量热方法进行热分析实验,研究不同加热速率下非晶合金条带Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9的晶化动力学特性。DSC曲线的晶化温度和晶化峰值温度随着加热速率的增高而向高温方向迁移,说明合金的晶化过程表现出明显的动力学特性。建立基辛格模型,拟合动力学模型函数对结晶率的实验曲线,可以获得动力学参数值,得出晶化激活能的数值为2.89 e V。研究表明:对于Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9合金,采用经验的双参数Sestak-Berggre模型能更加定量描述其晶化过程,而Johnson-Mehl-Avrami模型适宜在较低加热速率下描述。The kinetics performance of amorphous Fe（73.5）Cu1Nb3Si（13.5）B9 ribbons has been investigated by thermal analysis experiments with differential scanning calorimetry（ DSC）.The DSC curve shows that the crystallization temperature and the crystallization peak temperature shifts to higher temperature with the increase of heating rate,which indicates that the crystallization could exhibit special notable kinetic performance.Fitting the experimental curves of the kinetic model function against the crystallized fraction could obtain kinetics parameter value with Kissinger model.It indicates that the crystallization process of these alloys can be described by two-parameter empirical Sestak-Berggren（ SB） model which can offer a more quantitative description,while the Johnson-MehlAvrami（ JMA） model can be reasonably satisfied at lower heating rates.

关 键 词：非晶合金 激活能 动力学 

分 类 号：TG14[一般工业技术—材料科学与工程]