交流磁场处理对Fe_(78)Si_(9)B_(13)非晶合金结构和性能的影响  

Effect of AC Field Magnetic Treatment on Structure and Properties of FeSiB Amorphous Alloy

作　　者：马海健[1] 胡颐华 黎光旭[3] 王伟民[4] Ma Haijian;Hu Yihua;Li Guangxu;Wang Weimin(School of Mechanical-Electrical and Vehicle Engineering,Weifang University,Weifang 261061,China;H3C Technologies Co.,Ltd,Beijing 100191,China;School of Physical Science and Technology,Guangxi University,Nanning 530004,China;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education),Shandong University,Jinan 250061,China)

机构地区：[1]潍坊学院机电与车辆工程学院,山东潍坊261061 [2]新华三技术有限公司,北京100191 [3]广西大学物理科学与工程技术学院,广西南宁530004 [4]山东大学材料液固结构演变与加工教育部重点实验室,山东济南250061

出　　处：《稀有金属材料与工程》2021年第7期2428-2434,共7页Rare Metal Materials and Engineering

基　　金：山东省重点研发计划(2019GGX102016);国家自然科学基金(51771103)。

摘　　要：利用X射线衍射仪(XRD)、振动样品磁强计(VSM)和差示扫描量热仪(DSC)对交流磁场处理前后Fe_(78)Si_(9)B_(13)非晶合金条带的结构和性能进行了分析研究。XRD和VSM结果显示,合金的近邻原子间距离(d)和矫顽力(Hc)随交流电流的增大先减小后增大,但饱和磁感应强度则随交流电流的增大变化幅度不大。d和Hc的变化由合金中不均匀特征结构在磁后效过程中的相互作用所导致。由DSC曲线计算获得的表观激活能、局域激活能和局域Avrami指数表明,交流磁场处理提高了合金晶化反应的初始晶化激活能和Avrami指数,降低了晶化反应的表观生长激活能。合金晶化行为的改变与结构磁弛豫过程中团簇原子对有序化以及溶质原子和自由体积的扩散有关。The structure and properties of as-quenched(AQ)and alternating current magnetic field(ACMF)treated Fe_(78)Si_(9)B_(13)amorphous ribbons were investigated by XRD,DSC and VSM.The XRD and VSM results show that the nearest neighbor distance(d)and coercivity(Hc)of the ACMF treated samples first decrease and then increase with increasing alternating current,however,the saturation magnetization varies little with the alternating current.The changes of d and Hc are attributing to the interaction of inhomogeneous characteristics structures in present alloys on the structural magnetic relaxation process.The apparent activity energies,local activity energies and local Avrami exponents of AQ and ACMF treated samples deduced from DSC curves show that ACMF treatment increases the onset crystallization activity energy and local Avrami exponent and decreases the apparent growth activity energy of the crystallization reactions.The changes of crystallization b ehavior are ascribe to atomic pair ordering of the atomic clusters and diffusion of free volume resulted by the magnetic aftereffect.

关 键 词：铁基非晶合金 软磁性能 磁后效 

分 类 号：TG139.8[一般工业技术—材料科学与工程] TM271.2[金属学及工艺—合金]