Effect of Nitrogen Content on Primary Recrystallization Behavior and Magnetic Property of Hi-B Steel  

作　　者：Hai-jun WANG Bing FU Li XIANG Zhe RONG Sheng-tao QIU 

机构地区：[1]National Engineering Research Center of Continuous Casting Technology,Central Iron and Steel Research Institute [2]School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing

出　　处：《Journal of Iron and Steel Research International》2016年第10期1080-1085,共6页

基　　金：Item Sponsored by National Natural Science Foundation of China(50934009)

摘　　要：The effect of nitrogen content on primary recrystallization microstructure,texture and magnetic property of Hi-B steel was studied by means of optical microscopy（OM）,scanning electron microscopy（SEM）,and electron backscatter diffraction（EBSD）.When nitrogen content increased gradually from 0.005 5% to 0.031 0%,the primary grain size and variation coefficient of nitrided sheet reduced from 26.85μm,0.590 to 18.87μm,0.525-0.565,respectively.Meanwhile,the primary recrystallization texture style of nitrided sheet was nearly identical to the texture style of decarburized sheet before nitriding treatment,but exhibiting a certain change on texture intensity.The variation of average magnetic induction value（B8）and core loss value（P17/50）were manifested to be Mshaped and W-shaped curves,respectively.When nitrogen content reached 0.016 0%,the best value of the average magnetic property of the final product was obtained as follows：the B8 and P17/50 were 1.921 Tand 0.968W/kg,respectively.Meanwhile,the best performance,B8 and P17/50,of single sheet was 1.964 Tand 0.854 W/kg.The effect of nitrogen content on primary recrystallization microstructure,texture and magnetic property of Hi-B steel was studied by means of optical microscopy（OM）,scanning electron microscopy（SEM）,and electron backscatter diffraction（EBSD）.When nitrogen content increased gradually from 0.005 5% to 0.031 0%,the primary grain size and variation coefficient of nitrided sheet reduced from 26.85μm,0.590 to 18.87μm,0.525-0.565,respectively.Meanwhile,the primary recrystallization texture style of nitrided sheet was nearly identical to the texture style of decarburized sheet before nitriding treatment,but exhibiting a certain change on texture intensity.The variation of average magnetic induction value（B8）and core loss value（P17/50）were manifested to be Mshaped and W-shaped curves,respectively.When nitrogen content reached 0.016 0%,the best value of the average magnetic property of the final product was obtained as follows：the B8 and P17/50 were 1.921 Tand 0.968W/kg,respectively.Meanwhile,the best performance,B8 and P17/50,of single sheet was 1.964 Tand 0.854 W/kg.

关 键 词：NITRIDING DECARBURIZATION primary recrystallization magnelic property texture Hi-B steel 

分 类 号：TG142.1[一般工业技术—材料科学与工程]