摘要
采用单辊快淬法制备了宽2mm,厚20μm的Fe75.5Cu1Nb3Si13.5B7非晶薄带,通过等温退火得到了非晶纳米晶双相结构的软磁性材料,纳米晶平均晶粒尺寸为8～11nm。利用X射线衍射(XRD)和差热分析(DTA)研究了非晶晶化后的组织与性能,发现非晶基体上析出了单一bcc结构的α-Fe(Si)固溶体。研究了Fe基合金在不同退火条件下纳米晶化后的软磁性能,结果表明:在783～865K退火1h后,可获得较高的饱和磁感应强度Bs和较低的矫顽力Hc,并且在823K退火1h后,表现出最佳的软磁性能,饱和磁化强度Bs为135.266Am2.kg-1,矫顽力Hc最低为1.8A.m-1。
The Fe75.5Cu1Nb3Si13.5B7 amorphous alloy s strips with 20 μm thickness and 2 mm width is fabricated by single-roller melt spinning method.The two-phase structure of amorphous and nanocrystalline is obtained by isothermal annealing at different temperature for 1h,the average grain size of nanocrystalline is 8～11 nm.The microstructure and thermal behavior of the alloy are analyzed by means of X-ray diffraction(XRD)and differential thermal analysis(DTA).The single b.c.c.structured α-Fe(Si)solid solution is pre...
出处
《铸造技术》
CAS
北大核心
2009年第3期333-336,共4页
Foundry Technology
关键词
FE基非晶合金
纳米晶化
软磁性
Amorphous alloy
Nanocrystallization
Soft magnetic property
