组内通告
研究动态
 
  研究动态
当前位置: 首页>>组内通告>>最新成果>>正文
 
Microstructure and magnetic properties of Fe81.3Si4B13Cu1.7 nanocrystalline alloys with minor Nb addition
2018-10-30 20:16  

X.C. Ren, Y.H. Li,  X.J. Jia, Z.Y. Qiu, G.Q. Xie, W. Zhang. J. Iron Steel Res. Int. 2018, 25: 614-618.

Abstract:
The amorphous matrix containing dispersive high number density (Nd) a-Fe nuclei with average grain sizes (D) of 4.3–6.2 nm was formed in the melt-spun Fe81.3–xSi4B13Cu1.7Nbx (x = 0–2) alloys, and the Nd and D values reduce with increase in the Nb content. The fine nanocrystalline structure with a-Fe grains of 14.0–21.6 nm in size was obtained for the annealed alloys, which showed high saturation magnetic flux density of 1.60–1.77 T and low coercivity (Hc) of 7.1–17.0 A/m. Addition of minor Nb significantly expands the optimum annealing temperature range for obtaining good soft magnetic properties, while coarsens the a-Fe grains, leading to a slight increase in the Hc. The mechanism of the effect of Cu and Nb elements on the structure and magnetic properties was discussed in terms of the formation and growth of the a-Fe nuclei of the alloys.

详细


关闭窗口
 
 
 
 返回首页 | 网站地图 | 联系我们 | 管理登录 

大连理工大学一号站娱乐平台客服  地址:辽宁省大连市大连理工大学材料科学与工程学院
电话:0411-84706400  邮编:116024