Effect of Nb on hot rolled microstructure and texture of low temperature oriented silicon steel
-
摘要: 采用OM、EBSD检测分析技术研究了铌对低温取向硅钢热轧组织与织构的影响，探索是否应在低温取向硅钢中加入铌。结果表明，含铌相较于不含铌取向硅钢热轧板晶粒更加细小，沿板厚方向组织梯度更加明显；铌元素的加入优化了取向硅钢热轧板织构，含铌比不含铌取向硅钢热轧板中的旋转立方织构取向密度小，而高斯织构和γ取向线密度大，其中高斯织构{110}<001>的织构密度f(g)高达12.19。Abstract: The effect of niobium on the microstructure and texture of low temperature oriented silicon steel was studied by OM and EBSD. The results show that the grain size of Nb-bearing hot rolled sheet is finer than that of Nb free oriented silicon steel, and the microstructure gradient along the thickness direction is more obvious. The addition of Nb optimizes the texture of hot rolled silicon steel. The rotated cubic texture orientation density of the oriented silicon steel hot-rolled sheet is small, while the Goss texture and γ-oriented linear density are high. And the texture density of the Goss texture {110}<001> is as high as 12.19.
-
Key words:
- low temperature oriented silicon steel /
- Nb /
- hot rolling /
- microstructure /
- texture
-
图 1 不同成分热轧板厚度方向的光学显微照片
Figure 1. OM of hot rolled plate with different Nb content along the thickness direction
图 2 不同成分热轧板板厚方向晶粒取向
Figure 2. Orientation maps of hot rolled sheet along thickness with different Nb contents
图 3 不同成分热轧板表层及次表层各织构组分比例
Figure 3. The proportion of texture component in the surface and subsurface of hot-rolled sheet with different compositions
图 4 不同成分热轧板的表层织构ODF图（φ2=45°的截面图）
Figure 4. ODF sections (φ2=45°) of surface textures of hot-rolled sheet with different composition
图 5 不同成分热轧板表层织构取向线分析
Figure 5. Distributions of texture oriented line in surface of hot rolling sheet with different compositions
表 1 试验钢化学成分
Table 1. Chemical compositions of experimental steel slab
% 编号 C Mn Si S Cu Al Nb N P 1# 0.041 0.04 3.2 0.0075 0.085 0.023 0.055 0.0085 <0.008 2# 0.041 0.04 3.2 0.0075 0.085 0.023 0.0085 <0.008 
下载: 导出CSV
表 2 热轧板晶粒尺寸
Table 2. Grain size of hot rolled plates with different Nb contents
位置 平均晶粒尺寸/μm 含铌 不含铌 表层 23.7 31.2 次表层 40.5 43.7 中心层 68.9 74.3
下载: 导出CSV
-
[1] Xia Z, Kang Y, Wang Q. Developments in the production of grainoriented electrical steel[J]. Journal of Magnetism and Magnetic aterials, 2008,320(23):3229−3233. doi: 10.1016/j.jmmm.2008.07.003 [2] Li Hui, Feng Yunli, 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):318−322. doi: 10.1007/s12598-013-0064-7 [3] Xia Qiangqiang, Li Lijuan, Liu Lihua, et al. Research progress of the grain-oriented silicon steel production process[J]. Materials Reports, 2010,24(3):85−88. (夏强强, 李莉娟, 刘立华, 等. 取向硅钢生产工艺研究进展[J]. 材料导报, 2010,24(3):85−88. [4] Chu Shuangjie, Yang Yongjie, He Zhenghua, et al. Calculation of Magnetostriction Coefficient for Laser-Scribed Grain-Oriented Silicon Steel Based on Magnetic Domain Interaction[J]. Acta Metallurgica Sinica, 2019,55(3):362−368. (储双杰, 杨勇杰, 和正华,等. 基于磁畴结构交互作用的激光刻痕取向硅钢磁致伸缩系数计算[J]. 金属学报, 2019,55(3):362−368. doi: 10.11900/0412.1961.2018.00242 [5] Sun Ying, Li Jun, Zhao Yu, et al. Experimental research of inhibitors in grain oriented electrical steel prepared by low slab reheating temperature technique[J]. Iron & Steel, 2009,44(5):64−67. (孙颖, 李军, 赵宇, 等. 采用低温板坯加热工艺生产的取向硅钢中抑制剂的研究[J]. 钢铁, 2009,44(5):64−67. doi: 10.3321/j.issn:0449-749X.2009.05.016 [6] Dang Ning, Zhang Wenkang, Li Zhichao, et al. Texture evolution of copper bearing CGO silicon steel during high temperature annealing[J]. Heat Treatment of Metals, 2016,41(2):88−93. (党宁, 张文康, 李志超, 等. 含铜CGO硅钢高温退火过程中的织构演变规律[J]. 金属热处理, 2016,41(2):88−93. [7] Feng Yunli, 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, 2017,426:89−94. doi: 10.1016/j.jmmm.2016.11.075 [8] Feng Yunli, Yin Xiaopan, Zhang Sijia. Effect of Nb on precipitates in grain oriented silicon steel[J]. Hot Working Technology, 2015,44(18):89−91. (冯运莉, 尹晓盼, 张思佳. 铌对取向硅钢中沉淀析出的影响[J]. 热加工工艺, 2015,44(18):89−91. [9] Wang Yong, Li Guangqiang, Zhu Chengyi, et al. Effect of niobium on microstructure evolution and behaviors of second phase particles of the reheate as-cast grain-oriented silicon steel[J]. Iron Steel Vanadium Titanium, 2019,40(6):135−142. (汪勇, 李光强, 朱诚意, 等. Nb对取向硅钢再加热过程组织演变和第二相粒子析出的影响[J]. 钢铁钒钛, 2019,40(6):135−142. [10] Yan Bin, Zhu Chengyi, Zhang Yunxiang, et al. Effect of Nb on precipitation behavior of inhibitors in hot rolled plate of oriented silicon steel[J]. Hot Working Technology, 2019,48(1):14−21. (严彬, 朱诚意, 张云祥, 等. Nb对取向硅钢热轧板中抑制剂析出行为的影响[J]. 热加工工艺, 2019,48(1):14−21. -
点击查看大图
计量
- 文章访问数: 159
- HTML全文浏览量: 28
- PDF下载量: 19
- 被引次数: 0
