| 退火过程中无取向电工钢的晶粒长大行为及磁性能演变 |
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| 引用本文： | 郭文一,焦海涛,谢信祥,赵龙志,赵明娟,胡勇. 退火过程中无取向电工钢的晶粒长大行为及磁性能演变[J]. 金属热处理, 2022, 47(8): 123-128. DOI: 10.13251/j.issn.0254-6051.2022.08.020 |
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| 作者姓名： | 郭文一 焦海涛 谢信祥 赵龙志 赵明娟 胡勇 |
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| 作者单位： | 1.华东交通大学 南昌市载运工具先进材料与激光增材制造重点实验室, 江西 南昌 330013; 2.华东交通大学 材料科学与工程学院, 江西 南昌 330013 |
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| 基金项目： | 江西省教育厅青年基金(GJJ190349);大学生创新创业训练计划(1500420013) |
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| 摘 要： | 对Fe-3%Si无取向电工钢冷轧板进行不同时间的退火处理,利用光学显微镜、EBSD等研究了退火过程的晶粒长大行为及其对磁性能的影响。结果表明,随着退火时间的增加,退火板中Goss以及γ织构晶粒占比降低,{114}<841>以及{001}<120>织构晶粒占比增大。在退火时间低于20 s时,退火织构以强γ和Goss织构为主。退火时间为60 s时,{001}<120>织构晶粒长大速率急剧增大,平均晶粒尺寸达到约105 μm。退火时间达到240 s时,退火织构以强{001}<120>以及{114}<841>织构为主。退火时间为30～60 s时轧向及横向磁感值迅速增大,60 s时轧向磁感达到最大值1.74 T,120 s时横向磁感达到最大值1.67 T,之后随着退火时间增加而轻微降低,并分别稳定在1.72 T和1.66 T左右。退火板45°方向磁感值先升高后降低,20 s时达到最大值1.67 T。各方向的铁损值均随退火时间的增加而降低,且磁各向异性逐渐减小。
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| 关 键 词： | 无取向电工钢 退火时间 晶粒长大 织构 磁性能 |
| 收稿时间： | 2022-03-23 |
Grain growth behavior and magnetic property evolution of non-oriented electrical steel during annealing |
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| Guo Wenyi,Jiao Haitao,Xie Xinxiang,Zhao Longzhi,Zhao Mingjuan,Hu Yong. Grain growth behavior and magnetic property evolution of non-oriented electrical steel during annealing[J]. Heat Treatment of Metals, 2022, 47(8): 123-128. DOI: 10.13251/j.issn.0254-6051.2022.08.020 |
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| Authors: | Guo Wenyi Jiao Haitao Xie Xinxiang Zhao Longzhi Zhao Mingjuan Hu Yong |
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| Affiliation: | 1. Key Laboratory of Advanced Materials for Vehicles & Laser Additive Manufacturing of Nanchang City, East China Jiaotong University, Nanchang Jiangxi 330013, China; 2. School of Materials Science and Engineering, East China Jiaotong University, Nanchang Jiangxi 330013, China |
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| Abstract: | Cold rolled Fe-3%Si non-oriented electrical steel sheet was annealed for different time. The grain growth behavior and magnetic properties evolution of the non-oriented electrical steel during annealing were investigated by optical microscope, EBSD and so on. The results indicate that the proportion of Goss and γ texture grains decreases with the increase of annealing time, while the proportion of {114}<841> and {001}<120> texture grains increases gradually. When the annealing time is lower than 20 s, the recrystallization texture is characterized by strong γ and Goss textures. When annealed for 60 s, the growth rate of {001}<120> texture grains increases sharply, and the average grain size reaches about 105 μm. When the annealing time is 240 s, the annealing texture is mainly strong {001}<120> and {114}<841> textures. The magnetic induction intensity along RD and TD rises rapidly during annealing for 30-60 s, and the value along RD reaches the maximum of 1.74 T at 60 s, and value along TD reaches the maximum of 1.67 T at 120 s. After that, the magnetic induction intensity decreases slightly with the increase of annealing time and stabilizes at about 1.72 T (RD) and 1.66 T (TD), respectively. The magnetic induction intensity along the 45° direction increases first and then decreases, reaching the maximum value of 1.67 T at 20 s. The iron loss along each direction decreases with the increase of annealing time, and the magnetic anisotropy also decreases gradually. |
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| Keywords: | non-oriented electrical steel annealing time grain growth texture magnetic properties |
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