应力退火对Fe_(73．5)Cu_1Nb_3Si_(13．5)B_9纳米晶合金磁性能的影响  

Effect of stress annealing on magnetic properties for nanocrystalline Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 alloy

作　　者：支起铮[1] 陈文智[2] 刘静雅[1] 何开元[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004 [2]钢铁研究总院国家非晶微晶合金工程技术研究中心,北京100081

出　　处：《材料研究学报》2006年第2期221-224,共4页Chinese Journal of Materials Research

基　　金：科技部十五科技攻关基金2001BA310A03资助项目~~

摘　　要：采用一种新的退火方式,将 Fe_(73．5)Cu_1Nb_3Si_(13．5)B_9合金薄带在铜环上卷绕成铁芯,研究在这种方式的退火过程中 Fe_(73．5)Cu_1Nb_3Si_(13．5)B_9合金薄带晶化时产生的张应力对其磁性的影响．结果表明：与普通退火相比,这种张应力使退火后合金的剩磁 Br 明显下降(最低为0．22T),形成的感生磁各向异性的易轴垂直于张应力的方向．这种横向感生磁各向异性起因于纳米 bcc Fe(Si)晶粒内通过内应力和负的磁滞伸缩引起的磁弹性作用．Applying a new annealing method, in which Fe73.5Cu1Nb3Si13.5B9 nanocrystalline ribbon was wound into toroidal core on a copper ring, influence of uniform tensile stress generated in crystallization process on magnetism of Fe73.5Cu1Nb3Si13.5B9 nanocrystalline ribbon was investigated. It is found that the remanence Br after the stress annealing is obviously lower than that after normal annealing and the minimum value is 0.22 T. The induced magnetic anisotropy with an easy axis perpendicular to the tensile stress direction develops. The origin of transversal stress-induced magnetic anisotropy can be explained by a magneto-elastic interaction within nanosized bcc Fe（Si） grains through internal stress and negative magnetostriction.

关 键 词：金属材料 Fe-Cu-Nb-Si-B纳米晶合金 磁性 应力退火 

分 类 号：TB383[一般工业技术—材料科学与工程]