|
|
Effect of Cr on microstructure, texture and properties of Nb-containing high strength non-oriented silicon steel |
CHENG Zhao-yang, ZHONG Bo-lin, JING Wen-qiang, YU Yao, SONG Xin-li, LIU Jing |
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China |
|
|
Abstract High strength non-oriented silicon steel is mainly used in high-speed motors, which requires good mechanical and magnetic properties. However, it is difficult for non-oriented silicon steel to obtain high strength and good magnetic properties at the same time. In this paper, the Cr-microalloyed Nb-containing high strength non-oriented silicon steel was designed and prepared. The effect of Cr on the microstructure, texture, mechanical properties and magnetic properties of Nb-containing high strength non-oriented silicon steel was studied by optical microscopy, EBSD, universal tensile testing machine, four-probe tester and magnetic properties test. The results show that the mass fraction addition of 0.5% Cr impedes the recovery of hot-rolled microstructure, and inhibits the recrystallization of normalized and final annealed microstructure. At the same time, the area fraction of favorable texture increases after normalization and annealing with the mass fraction addition of 0.5% Cr, while the area fraction of unfavorable texture decreases. Moreover, the mass fraction addition of 0.5% Cr increases the yield strength significantly and magnetic induction slightly of Nb-containing non-oriented silicon steel, but almost has no effect on the iron loss of the steel. The increase of yield strength of Nb-containing high strength non-oriented silicon steel after adding Cr is due to the solid solution strengthening effect of Cr, and the promotion of Nb precipitation by adding Cr and hence enhances the precipitation strengthening effect of Nb. The improvement of magnetic induction after adding Cr is owing to the promotion of favorable textures formation and the inhibition of unfavorable texture formation, which increases the texture factor. The resistivity of non-oriented silicon steel is increased after adding Cr, and hence decreases the iron loss. However, on the other hand, the promotion of Nb precipitation after adding Cr will increase iron loss by impeding the growth of crystal grains, and inhibiting the movement of magnetic domain. Thus, the mass fraction addition of 0.5% Cr will almost has no effect on iron loss of Nb-containing high strength non-oriented silicon steel as the co-effect of these two factors. Therefore, adding a small amount of Cr to the Nb-containing high strength non-oriented silicon steel will increase the strength and improve the comprehensive magnetic properties of steel due to the solid solution effect of Cr and its promotion of Nb precipitation.
|
Received: 18 November 2021
|
|
|
|
[1] 焦海涛, 蔺晓雪, 谢信祥, 等. 轧制工艺对薄带铸轧无取向硅钢组织性能的影响[J]. 轧钢, 2021, 38(5):6.(JIAO Hai-tao, LIN Xiao-xue, XIE Xin-xiang, et al. Effect of rolling process on microstructure and properties of strip casting non-oriented silicon steel[J]. Steel Rolling, 2021, 38(5):6.) [2] 刘青松, 裴英豪, 施立发, 等. 退火张力对Fe-3.0%Si无取向硅钢磁各向异性的影响[J]. 钢铁, 2020, 55(4): 95. (LIU Qing-song, PEI Ying-hao, SHI Li-fa, et al. Effect of annealing tension on magnetic anisotropy of Fe-3.0%Si non-oriented silicon steel[J]. Iron and Steel, 2020, 55(4): 95.) [3] 朱诚意, 鲍远凯, 汪勇, 等. 新能源汽车驱动电机用无取向硅钢应用现状和性能调控研究进展[J]. 材料导报, 2021, 35(23):8(ZHU Cheng-yi, BAO Yuan-kai, WANG Yong, et al. Research progress on application status and property control of non-oriented silicon steel for traction motor of new energy vehicles[J]. Materials Reports, 2021, 35(23):8) [4] El-Refaie A, Osama M. High specific power electrical machines: A system perspective[J]. CES Transactions on Electrical Machines and Systems, 2019, 3(1): 88. [5] Li S, Li Y, Choi W, et al. High-speed electric machines: Challenges and design considerations[J]. IEEE Transactions on Transportation Electrification, 2016, 2(1): 2. [6] 孔祥兵, 任慧平, 金自力, 等. 退火温度对 Nb-Ti 微合金化高强无取向电工钢析出物及性能的影响[J]. 材料热处理学报, 2020, 41(8): 68.(KONG Xiang-bing, REN Hui-ping, JIN Zi-li, et al. Influence of annealing temperature on precipitates and properties of Nb-Ti microalloyed high-strength non-oriented electrical steel[J]. Transaction of Materials and Heat Treatment, 2020, 41(8): 68.) [7] 潘振东, 项利, 张晨, 等. 高强度无取向电工钢的研究进展[J]. 机械工程材料, 2014, 38(4): 7.(PAN Zhen-dong, XIANG Li, ZHANG Chen, et al. Research progress of high strength non-oriented electrical steel[J]. Materials for Mechanical Engineering, 2014, 38(4): 7.) [8] 张兴海. 双辊薄带连铸(Cr-Ni)高强度无取向硅钢的组织性能研究[D]. 沈阳:东北大学, 2015. (ZHANG Xing-hai. Study on the Microstructure and Properties of (Cr-Ni) Non-Oriented Silicon Steel with High Strength Produced by Twin-Roll Strip Casting[D]. Shenyang: Northeastern University, 2015.) [9] 张峰, 胡瞻源, 王波. Cu、Ni、Cr对3%Si无取向硅钢组织和性能的影响[J]. 电工材料, 2017, 2(2): 9.(ZHANG Feng, HU Zhan-yuan, WANG Bo. Effect of Cu,Ni,Cr on microstructure and properties of 3%Si non-oriented silicon steel[J]. Electrical Engineering Material,2017, 2(2):9.) [10] 薛利强, 潘振东, 吕令涛, 等. 超高牌号无取向硅钢降钛工艺研究及改进[J]. 中国冶金, 2020, 30(10): 60. (XUE Li-qiang, PAN Zhen-dong, LÜ Ling-tao, et al. Research and improvement of technology to reduce Ti content in super-high grade non-oriented electrical steel[J]. China Metallurgy, 2020, 30(10): 60.) [11] 何忠治, 赵宇, 罗海文. 电工钢[M]. 北京: 冶金工业出版社, 2012.(HE Zhong-zhi, ZHAO Yu, LUO Hai-wen. Electrical Steel[M]. Beijing: Metallurgical Industry Press, 2012.) [12] ZHANG B, LIANG Y, HAN C, et al. High-strength low-iron-loss electrical steel accomplished by Cu-rich nanoprecipitates[J]. Materials Letters, 2021, 296: 129917. [13] ZHANG Y, SONG R, WANG Y, et al. Precipitation evolution, strengthening and toughening mechanisms of Fe-3Si-2Cu (in wt.%) steel during aging process[J]. Materials Science and Engineering: A, 2021, 806: 140863. [14] 黄俊, 罗海文. 退火工艺对含Nb高强无取向硅钢组织及性能的影响[J]. 金属学报, 2018, 54(3): 377.(HUANG Jun, LUO Hai-wen. Influence of annealing process on microstructures, mechanical and magnetic properties of Nb-containing high-strength non-oriented silicon steel[J]. Acta Metallurgica Sinica, 2018, 54(3): 377.) [15] 于雷, 罗海文. 部分再结晶退火对无取向硅钢的磁性能与力学性能的影响[J]. 金属学报, 2020, 56(3): 291. (YU Lei, LUO Hai-wen. Effect of partial recrystallization annealing on magnetic properties and mechanical properties of non-oriented silicon steel[J]. Acta Metallurgica Sinica, 2020, 56(3):291.) [16] 李准, 郑泽林. 合金元素及常化工艺对冷轧无取向硅钢性能的影响[J]. 武汉工程职业技术学院学报, 2016, 28(4): 24.(LI Zhun, ZHENG Ze-lin. Effect of alloying elements and process on the properties of cold-rolled non-oriented silicon steel[J]. Journal of Wuhan Engineering Institute, 2016, 28(4):24.) [17] 李兆振, 宋新莉, 刘静, 等. 铬, 锰及退火温度对无取向硅钢组织性能影响[J]. 钢铁, 2020, 55(5): 80.(LI Zhao-zhen, SONG Xin-li, LIU Jing, et al. Effect of Cr, Mn and annealing temperature on properties of non-oriented silicon steel[J]. Iron and Steel, 2020, 55(5): 80.) [18] DU L, ZHOU G, LIU J, et al. Fatigue cracking characterization of high grade non-oriented electrical steels[J]. Journal of Wuhan University of Technology-Materials Science Edition, 2017, 32(6): 1329. [19] Schulte M, Steentjes S, Leuning N, et al. Effect of manganese in high silicon alloyed non-oriented electrical steel sheets[J]. Journal of Magnetism and Magnetic Materials, 2019, 477(5): 372. [20] QIN J, YANG P, MAO W, et al. Effect of texture and grain size on the magnetic flux density and core loss of cold-rolled high silicon steel sheets[J]. Journal of Magnetism and Magnetic Materials, 2015, 393(11): 537. [21] Chang S K, Huang W Y. Texture effect on magnetic properties by alloying specific elements in non-grain oriented silicon steels[J]. ISIJ International, 2005, 45(6): 918. [22] 赵莉萍. 金属材料学[M]. 北京:北京大学出版社, 2012.(ZHAO Li-ping. Metal Material Science[M]. Beijing:Peking University Press, 2012) [23] 胡赓祥, 蔡珣,戎咏华. 材料科学基础[M]. 上海:上海交通大学出版社, 2009. (HU Geng-xiang, CAI Xun, RONG Yong-hua. Fundamentals of Materials Science[M]. Shanghai:Shanghai Jiaotong University Press, 2009) |
[1] |
LI Hua-ying, LIU Guo-xiang, SONG Yao-hui, ZHAO Hai-quan, LI Juan, TIAN Ying-hao. Hot deformation behavior of antibacterial stainless steel containing 4.35% copper[J]. Iron and Steel, 2022, 57(9): 123-129. |
[2] |
WANG Jin-feng, YUAN Yao, LI Cong. Microstructures and mechanical properties of laser tailor- welded dissimilar super-high strength steel sheets[J]. Iron and Steel, 2022, 57(9): 138-147. |
[3] |
REN Lei1,2,CAO Jianqiang3,ZHANG Hainan1,2,YANG Jichun1,2,FU Xiaoyang1,2,ZHANG Fang1,2. Effect of Ce content on mechanical properties of U75V steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(9): 999-1008. |
[4] |
ZHANG Guopeng1,SHEN Fengman1,GAO Qiangjian1,ZHAI Xinguo2,ZHANG Guoliang3,JIANG Xin1. Effect of reducing MgO content on metallurgical properties of high Al2O3 sinter[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(8): 749-757. |
[5] |
MAN Tinghui1,JIANG Chang1,LIU Kun1,LIU Tengshi1,GU Jincai2,DONG Han1. Study on hardenability of large cross-sectional high strength medium-Mn forged steels[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(8): 834-839. |
[6] |
ZHOU Mengsha1, LIU Xing2, CHEN Wei3, CAO Jianchun2, YIN Shubiao1, ZHANG Yongqing4. Effect of N content on microstructure and properties of Nb microalloyed HRB400E rebar[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2022, 34(8): 848-858. |
|
|
|
|