Asynchronous responses of mechanical and magnetic properties to structure relaxation for FeNbB bulk metallic glass  

作　　者：Zhi-kai Gao An-ding Wang Ping-bo Chen Cheng-liang Zhao Fu-shan Li Ai-na He Chun-tao Chang Xin-min Wang Chain-tsuan Liu 

机构地区：[1]School of Materials Science and Engineering, ZhengzhouUniversity, Zhengzhou 450001, Henan, China [2]Key Laboratory of Magnetic Materials and Devices, NingboInstitute of Materials Technology and Engineering, ChineseAcademy of Sciences, Ningbo 315201, Zhejiang, China [3]Zhejiang Province Key Laboratory of Magnetic Materials andApplication Technology, Ningbo Institute of MaterialsTechnology and Engineering, Chinese Academy of Sciences,Ningbo 315201, Zhejiang, China [4]Center for Advanced Structural Materials, Department ofMechanical and Biomedical Engineering, College of Scienceand Engineering, City University of Hong Kong, Hong Kong,China

出　　处：《Journal of Iron and Steel Research International》2018年第6期637-643,共7页

基　　金：This work was mainly supported by the National Key Research and Development Program of China （Grant Nos. 2016YFB0300501, 2017YFB0t）03t）02）, and the National Natural Science Foundation of China （Grant Nos. 51601206, 51771159）. An- dJng Wang and Chain-tsuan Liu would like to acknowledge lhe support by General Research Fund of Hong Kong under the grant number of City 102013.

摘　　要：Asynchronous responses of mechanical and magnetic properties to structure relaxation for the Fe71Nb6B23 bulk metallic glass were systematically investigated. It is interesting that this ternary alloy can combinedly exhibit outstanding magnetic and mechanical properties, especially good ductility, after optimally annealing in structure relaxation stage for eliminating the internal stress and homogenizing the microstructure. The alloy exhibits low coercive force of 1.6 A/m, high effective permeability of 15 x 10^3, high fracture strength of 4.2 GPa and good plastic strAln of 1.8%. It is also found that responses of mechanical and magnetic properties to structure relaxation are asynchronous. The glass transition and crystallization will greatly deteriorate the magnetic and mechanical properties. Here we propose a physical picture and demonstrate that the primary structure factors determining magnetic and mechanical properties are different. This work will bring a promising material for application and a new perspective to study the effect of annealing-induced structure relaxation on mechanical and magnetic properties.Asynchronous responses of mechanical and magnetic properties to structure relaxation for the Fe71Nb6B23 bulk metallic glass were systematically investigated. It is interesting that this ternary alloy can combinedly exhibit outstanding magnetic and mechanical properties, especially good ductility, after optimally annealing in structure relaxation stage for eliminating the internal stress and homogenizing the microstructure. The alloy exhibits low coercive force of 1.6 A/m, high effective permeability of 15 x 10^3, high fracture strength of 4.2 GPa and good plastic strAln of 1.8%. It is also found that responses of mechanical and magnetic properties to structure relaxation are asynchronous. The glass transition and crystallization will greatly deteriorate the magnetic and mechanical properties. Here we propose a physical picture and demonstrate that the primary structure factors determining magnetic and mechanical properties are different. This work will bring a promising material for application and a new perspective to study the effect of annealing-induced structure relaxation on mechanical and magnetic properties.

关 键 词：Bulk metallic glass Annealing Mechanical property Magnetic property Structure relaxation 

分 类 号：O614[理学—无机化学] TU111.195[理学—化学]