Effect of Si content on hot deformation behavior and dynamic recrystallization of high-silicon electrical steel

被引：0
作者：
Xiao F. [1 ]
Zhang Z.-H. [1 ]
Fu H.-D. [1 ]
机构：
[1] Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing
来源：
Gongcheng Kexue Xuebao/Chinese Journal of Engineering | 2019年 / 41卷 / 03期
关键词：
Constitutive analysis; Dynamic recrystallization; High-silicon electrical steels; Hot deformation activation energy; Hot deformation behavior;
D O I：
10.13374/j.issn2095-9389.2019.03.006
中图分类号：
学科分类号：
摘要：
High-silicon electrical steel is an excellent soft magnetic material with high permeability, low coercive force, and near-zero magnetostriction coefficient. Compared with other preparation methods of high-silicon electrical steel sheet, the rolling method has the advantages of short process and high efficiency. Among the rolling methods, hot rolling is one of the most important part in the formation of high-silicon electrical steel sheet. Therefore, it is very important to study the hot deformation and dynamic recrystallization behaviors of high-silicon electrical steels. In this study, hot deformation and dynamic recrystallization behaviors of Fe-(5.5%, 6.0%, 6.5%)Si high-silicon electrical steel were studied using a Gleeble-3800D thermal-mechanical simulator with a deformation temperature of 750-1050℃ and strain rate of 0.01-1 s-1. The constitutive equations of Fe-(5.5%, 6.0%, 6.5%)Si high-silicon electrical steels were established by linear regression analysis. The thermal deformation activation energies of Fe-5.5% Si, Fe-6.0% Si, and Fe-6.5% Si high-silicon electrical steel are 310.425, 363.831, and 422.162 kJ•mol-1, respectively. It is observed that the thermal deformation activation energies of Fe-(5.5%, 6.0%, 6.5%)Si high-silicon electrical steel improve with the increase of Si content, which makes the deformation resistance of Fe-(5.5%, 6.0%, 6.5%)Si high-silicon electrical steel improve with the increase of Si content. Moreover, the dynamic recrystallization percentage was calculated using the intercept method of metallographic examination, and the statistical results show that the dynamic recrystallization percentage of Fe-(5.5%, 6.0%, 6.5%)Si high-silicon electrical steel decreases with the increase of Si content under the same deformation condition. Meanwhile, at the temperature of 750-850℃, the softening mechanism of Fe-(5.5%, 6.0%, 6.5%)Si high-silicon electrical steel is mainly dynamic recovery, while at the temperature of 950-1050℃, the softening mechanism is mainly dynamic recrystallization. © All right reserved.
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页码：332 / 342
页数：10
相关论文
共 19 条
  • [1] Xu H.J., Xu Y.B., Jiao H.T., Et al., Influence of grain size and texture prior to warm rolling on microstructure, texture and magnetic properties of Fe-6.5 wt% Si steel, J Magn Magn Mater, 453, (2018)
  • [2] Yu J.H., Shin J.S., Bae J.S., Et al., The effect of heat treatments and Si contents on B2 ordering reaction in high-silicon steels, Mater Sci Eng A, 307, 1-2, (2001)
  • [3] Haiji H., Okada K., Hiratani T., Et al., Magnetic properties and workability of 6.5% Si steel sheet, J Magn Magn Mater, 160, (1996)
  • [4] Li R., Shen Q., Zhang L.M., Et al., Magnetic properties of high silicon iron sheet fabricated by direct powder rolling, J Magn Magn Mater, 281, 2-3, (2004)
  • [5] Liang Y.F., Lin J.P., Ye F., Et al., Microstructure and mechanical properties of rapidly quenched Fe-6.5 wt.% Si Alloy, J Alloys Compd, 504, (2010)
  • [6] Kasama A.H., Bolfarini C., Kiminami C.S., Et al., Magnetic properties evaluation of spray formed and rolled Fe-6.5 wt.% Si-1.0 Wt.% Al Alloy, Mater Sci Eng A, 449-451, (2007)
  • [7] Lin J.P., Zhong T.B., Lin Z., Et al., Fabrication of the sheets for Fe<sub>3</sub>Si based alloy, J Univ Sci Technol Beijing, 23, 5, (2001)
  • [8] Ros-Yanez T., Houbaert Y., Fischer O., Et al., Production of high silicon steel for electrical applications by thermomechanical processing, J Mater Process Technol, 141, 1, (2003)
  • [9] Zhang B., Zhu L.L., Wang K.S., Et al., High temperature plastic deformation behavior and constitutive equation of pure nickel, Chin J Rare Met, 39, 5, (2015)
  • [10] Mo Y.K., Zhang Z.H., Xie J.X., Et al., Effect of recrystallization on the microstructure, ordering and mechanical properties of cold-rolled high silicon electrical steel sheet, Acta Metall Sin, 52, 11, (2016)
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