Effect of Ball Scribing on Magnetic Barkhausen Noise of Grain-oriented Electrical Steel  

作　　者：Hao Wang Changsheng Li Tao Zhu Ban Cai Gang Huo Nasir Mohamed 

机构地区：[1]State Key Laboratory of Rolling and Automation,Northeastern University [2]Wolfson Centre for Magnetics,Cardiff University,Cardiff CF24 3AA,UK [3]Benxi Steel Posco Cold Strip Rolling Co.Ltd

出　　处：《Journal of Materials Science & Technology》2013年第7期673-677,共5页材料科学技术（英文版）

基　　金：The financial support of the National Natural Science Foundation of China(Nos.51174057 and 51274062);the National High Technology Research and Development Program (No.2012AA03A503)

摘　　要：Effect of ball scribing on magnetic Barkhausen noise （MBN） of conventional grain-oriented （CGO） and high- permeability grain-oriented （HGO） electrical steel was investigated. The results showed that after ball scribing, root mean square of MBN （MBNrms） of CGO electrical steel increased 9.8% with 4 mm scribing spacing at 1.2 T, and that of HGO electrical steel apparently decreased 17.3% with 16 mm scribing spacing at 1.2 T. Through the formation and development of free magnetic poles and secondary magnetic domains due to compressive stress, primary magnetic domain space of grain-oriented electrical steel becomes smaller, which reflects as a variation of MBN in the macroscopic magnetic properties. Through correlation formula derivation of MBNrms and equilibrium distance between domain walls, effect of domain refinement on grain-oriented electrical steel was also interpreted, and optimum equilibrium distance between domain walls was determined.Effect of ball scribing on magnetic Barkhausen noise （MBN） of conventional grain-oriented （CGO） and high- permeability grain-oriented （HGO） electrical steel was investigated. The results showed that after ball scribing, root mean square of MBN （MBNrms） of CGO electrical steel increased 9.8% with 4 mm scribing spacing at 1.2 T, and that of HGO electrical steel apparently decreased 17.3% with 16 mm scribing spacing at 1.2 T. Through the formation and development of free magnetic poles and secondary magnetic domains due to compressive stress, primary magnetic domain space of grain-oriented electrical steel becomes smaller, which reflects as a variation of MBN in the macroscopic magnetic properties. Through correlation formula derivation of MBNrms and equilibrium distance between domain walls, effect of domain refinement on grain-oriented electrical steel was also interpreted, and optimum equilibrium distance between domain walls was determined.

关 键 词：Ball scribing Grain-oriented electrical steel Magnetic Barkhausen noise Domain refinement 

分 类 号：TM275[一般工业技术—材料科学与工程]