Fe_(75)Co_6Zr_7Nb_2B_(10)合金的微观结构及热稳定性  

Microstructure and Thermal Stability of Fe_(75)Co_6Zr_7Nb_2B_(10) Alloy

作　　者：左斌[1] 刘洁[1] 王丽丽[1] 石刘军[1] 田乐[1] 于万秋[1] 华中[1] 

机构地区：[1]吉林师范大学功能材料物理与化学教育部重点实验室,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2013年第2期94-96,共3页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省科技发展计划资助项目(201105083);吉林师范大学研究生创新科研计划项目(201103)

摘　　要：采用单辊快淬法制备Fe75Co6Zr7Nb2B10非晶合金,在不同热处理条件下对该合金进行热处理.利用X射线衍射仪(XRD)和差热分析仪(DTA)等测试手段对Fe75Co6Zr7Nb2B10合金的微观结构和热性能进行研究.研究结果表明:Fe75Co6Zr7Nb2B10非晶合金在晶化初期,有α-Fe相析出;经1 023 K退火后,有Fe3Zr和Fe2Nb0.4Zr0.6相化合物析出.随着退火温度及在873 K保温时间的增加,α-Fe相的晶格常数均先增大后减小.Fe75Co6Zr7Nb2B10非晶合金在加热速率为5～20 K/min和加热速率为20～50 K/min时对应的晶化激活能Ep分别为531.8 kJ/mol和355.6 kJ/mol.Fe75Co6Zr7Nb2B10 amorphous alloy was prepared by melt-spinning and annealed at different heat treatment conditions. The microstructure and thermal stability were investigated by X-ray diffraction （XRD） and differential thermal analysis （DTA）. At the initial stage of crystallization, a-Fe phase precipitates. After annealing at 1 023 K, Fe3Zr and Fe2Nb0.4Zr0.6 phases precipitate. With increasing the annealing temperature and holding time,lattice constant of a-Fe both first increases and then decreases. The crystallization activation energy Ep are determined as 531.8 kJ/mol and 355.6 kJ/mol for the heating rates at the range of 5 to 20 K/min and at the range of 20 to 50 K/min, respectively.

关 键 词：FeCoZrNbB非晶合金 微观结构 热稳定性 

分 类 号：TG139.8[一般工业技术—材料科学与工程]