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钛含量对无取向电工钢组织和磁性能的影响

李景才 辛燕

李景才, 辛燕. 钛含量对无取向电工钢组织和磁性能的影响[J]. 钢铁钒钛, 2021, 42(4): 156-161. doi: 10.7513/j.issn.1004-7638.2021.04.026
引用本文: 李景才, 辛燕. 钛含量对无取向电工钢组织和磁性能的影响[J]. 钢铁钒钛, 2021, 42(4): 156-161. doi: 10.7513/j.issn.1004-7638.2021.04.026
Li Jingcai, Xin Yan. Effect of Ti on microstructure and magnetic properties of non-oriented electrical steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 156-161. doi: 10.7513/j.issn.1004-7638.2021.04.026
Citation: Li Jingcai, Xin Yan. Effect of Ti on microstructure and magnetic properties of non-oriented electrical steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 156-161. doi: 10.7513/j.issn.1004-7638.2021.04.026

钛含量对无取向电工钢组织和磁性能的影响

doi: 10.7513/j.issn.1004-7638.2021.04.026
详细信息
    作者简介:

    李景才(1982−),男,汉族,讲师,主要研究方向:材料研发及机械制造,E-mail:411785183@qq.com

  • 中图分类号: TF823, TG142.1

Effect of Ti on microstructure and magnetic properties of non-oriented electrical steel

  • 摘要: 以实验室冶炼的不同钛含量的无取向电工钢为原材料,采用退火炉、透射电镜、金相组织观察和磁性能测试等手段就钛含量对无取向电工钢组织和性能的影响进行了研究。结果表明:试样的晶粒尺寸随其钛含量增加而减小,当钛含量小于0.015%时,试样的晶粒组织呈等轴状,均匀性较高,其中的钛以碳氮化物形式析出,且钉扎于组织的晶界处;随着钛含量提高至0.015%以上,其组织中的晶粒形变明显,钛以铁-钛磷化物形式析出于晶内和晶界上。添加微量的钛( ≤0.015%)可改善电工钢的磁感应强度和铁损,铁损W15/50约4.6~5.2 W/kg,磁感应强度B50约1.74~1.76 T,但需严格避免钛含量的过量添加。
  • 图  1  热处理连续退火工艺

    Figure  1.  Continuous annealing parameters of heat treatment

    图  2  试验钢经退火后的金相组织

    Figure  2.  Microstructure of tested steels after annealing

    图  3  试样退火后的透射电镜形貌

    (a)试样1#;(b)试样5#;(c)试样9#

    Figure  3.  TEM images of Ti bearing steels after annealing

    图  4  铁损W15/50与钛含量的关系曲线

    Figure  4.  Relationship between iron loss W15/50 and titanium content

    图  5  磁感强度B50与钛含量的关系曲线

    Figure  5.  Relationship between the intensity of magnetic induction B50 and the content of titanium

    图  6  各试样退火前的微观组织

    Figure  6.  Microstructure of individual steels before annealing

    图  7  退火前试样反极图强度与钛含量的关系

    Figure  7.  Relationship between strength of reverse pole diagram and titanium content in steels before annealing

    图  8  退火后试样反极图织构强度与钛含量的关系

    Figure  8.  Relationship between strength of reverse pole diagram and titanium content in steels after annealing

    表  1  试验钢的主要化学成分

    Table  1.   Main chemical compositions of tested steels %

    CSiMnPSAlsTiNO
    1#<0.00100.300.290.1000.00420.27≤0.0010.00130.0032
    2#<0.00100.320.300.0980.00410.280.0020.00150.0018
    3#<0.00100.330.280.0980.00450.260.0040.00130.0010
    4#<0.00100.320.300.0970.00420.260.0050.00130.0024
    5#<0.00100.320.290.0980.00420.270.0090.00140.0022
    6#<0.00100.280.290.0980.00440.270.0150.00130.0011
    7#<0.00100.290.280.1000.00420.260.0420.00120.0026
    8#<0.00100.320.300.0980.00450.280.0720.00130.0032
    9#<0.00100.290.290.0970.00420.270.1180.00110.0012
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-01-10
  • 刊出日期:  2021-08-10

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