Abstract：In order to obtain the primary recrystallization structure conducive to the development of secondary recrystallization,the effect of Nb on the primary recrystallization behavior of low temperature grain-oriented silicon steel was studied,the effects of 0.055% Nb and Nb-free samples on the primary recrystallization structure,texture and grain boundary characteristics of intermediate annealed plate of low temperature grain-oriented silicon steel were studied by OM and EBSD techniques. The results show that the addition of Nb forms fine dispersed Nb (C,N) in the silicon steel matrix,enhances the inhibition of the inhibitor on the growth of primary recrystallized grains,makes the primary recrystallized microstructure of Nb-containing samples more fine and uniform,the average grain size in the surface direction is 11.53 μm,while the Nb-free sample is 12.95 μm. The average grain size in the thickness direction of the Nb-containing sample is 12.46 μm,while the Nb-free sample is 13.78 μm. After intermediate annealing,the surface texture of the Nb-containing sample and the Nb-free sample is relatively weak,but Nb-containing sample have more sharp γ-fiber texture. Two samples of subsurface layer γ-fiber texture and Goss texture are strengthened,and the Nb-containing sample γ-fiber texture is relatively stronger. The beneficial texture content of {111}<112>,{411}<148> is relatively high in the Nb-containing sample.The main grain boundaries in the primary recrystallized samples after intermediate annealing are high-energy grain boundaries and large angle grain boundaries. The high energy grain boundaries in the Nb-containing sample are more than Nb-free sample. The grain boundaries of Nb-containing and Nb-free samples are mainly distributed in Σ3-Σ11 Between grain boundaries,the addition of Nb can increase Σ9 grain boundary content. After the high temperature annealing,the secondary recrystallized microstructure of the Nb-containing sample is more complete than the Nb-free sample,and the final product has better magnetic properties,with B800 reaching 1.89 T and P1.7/50being 1.37 W/kg.
王黎光, 王书桓, 段阳会, 李杰, 冯运莉. 铌对低温取向硅钢初次再结晶行为的影响[J]. 钢铁, 2022, 57(1): 119-125.
WANG Li-guang, WANG Shu-huan, DUAN Yang-hui, LI Jie, FENG Yun-li. Effect of Nb on primary recrystallization behavior of low temperature grain-oriented silicon steel[J]. Iron and Steel, 2022, 57(1): 119-125.
[1] 何忠治. 电工钢[M]. 北京:冶金工业出版社,2012.(HE Zhong-zhi. Electrical Steel[M]. Beijing:Metallurgical Industry Press,2012.) [2] LI Hui,FENG Yun-li,ZHANG Dan,et al. Balanced solubility product and enthalpies of formation of Nb compounds in 0.09% oriented silicon steel[J]. Rare Metals,2013,32(3):318. [3] 黎先浩,孟小涛,赵鹏飞,等. 高磁感取向硅钢研发现状与展望[J]. 中国冶金,2019,29(1):1.(LI Xian-hao,MENG Xiao-tao,ZHAO Peng-fei,et al. Research and development status and prospect of high magnetic induction oriented silicon steel[J]. China Metallurgy,2019,2019,29(1):1.) [4] 张波,孟利,张宁,等. 超薄取向硅钢的研究进展[J]. 钢铁,2020,55(10):96.(ZHANG Bo,MENG Li,ZHANG Ning,et al. Research progress of ultra-thin oriented silicon steel[J]. Iron and steel,2020,55(10):96.) [5] FENG Yun-li,LI Yang,GUO Jing,et al. Effect of slab reheating temperature on recrystallization microstructure,texture and magnetic properties of Nb-containing grain-oriented silicon steel[J]. Journal of Magnetism and Magnetic Materials,2017,439:135. [6] 张波,孟利,张宁,等. 退火温度对超薄取向硅钢织构及磁性能的影响[J]. 钢铁,2021,56(3):29.(ZHANG Bo,MENG Li,ZHANG Ning,et al. Effect of annealing temperature on texture and magnetic properties of ultra-thin oriented silicon steel[J]. Iron and steel,2021,56(3):29.) [7] FENG Yun-li,GUO Jing,LI Jie,et al. Effect of Nb on solution and precipitation of inhibitors in grain-oriented silicon steel[J]. Journal of Magnetism and Magnetic Materials,2017,426:89. [8] 张颖,傅耘力,汪汝武,等. Nb(C,N)作为取向硅钢中抑制剂的可行性[J]. 中国冶金,2008,18(7):14.(ZHANG Ying,FU Yun-li,WANG Ru-wu,et al. Feasibility of Nb(C,N) as inhibitors in oriented silicon steel[J]. China Metallurgy,2008,18(7):14.) [9] 杨佳欣,杨平,许光,等. 低温高磁感取向硅钢初次再结晶特征对二次再结晶完成的影响[J]. 材料热处理学报,2017,38(3):103. (YANG Jia-xin,YANG Ping,XU Guang,et al. Effect of primary recrystallization characteristics on secondary recrystallization of high permeability grain-oriented silicon steel with slab reheating at low temperature[J]. Transactions of Materials and Heat Treatment,2017,38(3):103.) [10] 刘志桥,杨平,毛卫民,等. 取向硅钢中{114}<418>织构对二次再结晶时晶粒异常长大的影响[J]. 金属学报,2015,51(7):769.(LIU Zhi-qiao,YANG Ping,MAO Wei-min,et al. Effect of {114}<418> texture on abnormal growth during secondary recrystallization in grain-oriented steel[J]. Acta Metallurgica Sinina,2015,51(7):769.) [11] HE Cheng-xu,YANG Fu-yao,MA Guang,et al. {411}<148> Texture in thin-gauge grain-oriented silicon steel[J]. Acta Metallurgica Sinica,2016,29(6):1. [12] Rajmohan N,Szpunar J A,Hayakawa Y. Importance of fractions of highly mobile boundaries in abnormal growth of Goss grains[J]. Materials Science and Engineering,1999,A259:8. [13] 白敏,冯运莉,王玥瑶,等. 脱碳退火保温时间对含铌低温取向硅钢初次再结晶的影响[J]. 金属热处理,2018,43(7):40.(BAI Min,FENG Yun-li,WANG Yue-yao,et al. Effect of holding time of decarbonization annealing on primary recrystallization of Nb-containing low temperature grain-oriented silicon steel[J]. Heat Treatment of Metals,2018,43(7):40.) [14] 吴圣杰,聂文金,尚成嘉,等. 铌含量对低碳微合金钢回复再结晶行为的影响[J]. 工程科学学报,2013,35(9):1144.(WU Sheng-jie,NIE Wen-jin,SHANG Cheng-jia,et al. Effect of niobium content on recovery recrystallization behavior of low carbon microalloyed steel[J]. Journal of Engineering Science,2013,35(9):1144.) [15] 刘彪,宋新莉,朱瑞琪,等. Nb对低温取向硅钢Goss织构演变的影响[J]. 材料热处理学报,2017,38(11):71.(LIU Biao,SONG Xin-li,ZHU Rui-qi,et al. Effect of niobium on goss texture evolution of low temperature orientation silicon steel[J]. Transactions of Materials and Heat Treatment,2017,38(11):71.) [16] 仇圣桃,项利,岳尔斌,等. 薄板坯连铸连轧流程生产取向硅钢技术分析[J]. 钢铁,2008,43(9):1.(QIU Sheng-tao,XIANG Li,YUE Er-bin,et al. Technology analysis of producing grain oriented silicon steel by thin slab casting and rolling process[J]. Iron and Steel,2008,43(9):1.) [17] 李杰,王凯琳,宁江利,等. 热轧工艺对含铌取向硅钢二次冷轧中织构的影响[J]. 金属热处理,2018,43(2):137.(LI Jie,WANG Kai-lin,NING Jiang-li,et al. Effect of hot rolling process on texture of Nb-contained grain-oriented silicon steel after double cold rolling[J]. Heat Treatment of Metals,2018,43(2):137.) [18] Ko K J,Cha P R,David S,et al. Abnormal grain growth induced by sub-boundary-enhanced solid-state wetting:Analysis by phase-field model simulations[J]. Acta Materialia,2009,57(3):838. [19] 于新攀,许令峰,吕亚平,等. Fe-3%Si取向电工钢初次再结晶织构的演化[J]. 热加工工艺,2016,45(16):37.(YÜ Xin-pan,XU Ling-feng,LÜ Ya-ping,et al. Evolution of primary recrystallization texture in Fe-3%Si oriented electrical steel[J]. Hot Working Technology,2016,45(16):37.) [20] CHANG S K. Texture change from primary to secondary recrystallization by hot-band normalization in grain-oriented silicon steels[J]. Materials Science and Engineering A,2007,452/453:93. [21] 王军阳,贾涓,朱诚意,等. 脱碳退火工艺对含铌Hi-B钢组织与织构的影响[J]. 武汉科技大学学报,2018,41(5):321.(WANG Jun-yang,JIA Juan,ZHU Cheng-yi,et al. Effect of decarburizing-annealing process on microstructure and texture of niobium containing Hi-B steel[J]. Journal of Wuhan University of Science and Technology,2018,41(5):321.) [22] Kim J K,Lee D N,Koo Y M. The evolution of the Goss and Cube textures in electrical steel[J]. Materials Letters,2014,122:110.
2022, Vol. 57 
