金属热处理 ›› 2021, Vol. 46 ›› Issue (10): 34-38.DOI: 10.13251/j.issn.0254-6051.2021.10.006

• 材料研究 • 上一篇    下一篇

加热温度对高Nb-Ti新能源汽车用无取向硅钢第二相固溶行为的影响

刘阳1, 金自力1,2, 任慧平1,2, 汲霖1   

  1. 1.内蒙古科技大学 材料与冶金学院, 内蒙古 包头 014010;
    2.内蒙古新金属材料重点实验室, 内蒙古 包头 014010
  • 收稿日期:2021-03-27 出版日期:2021-10-25 发布日期:2021-12-08
  • 通讯作者: 金自力,教授,硕士,E-mail:jinzl6310@126.com
  • 作者简介:刘 阳(1995—),女,硕士研究生,主要研究方向为新能源汽车用无取向硅钢生产工艺,E-mail:1270824443@qq.com
  • 基金资助:
    国家自然科学基金(51761033)

Effect of heating temperature on solid solution behavior of secondary phases of non-oriented silicon steel for high Ni-Ti new energy vehicles

Liu Yang1, Jin Zili1,2, Ren Huiping1,2, Ji Lin1   

  1. 1. School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China;
    2. Inner Mongolia Key Laboratory of New Metal Materials, Baotou Inner Mongolia 014010, China
  • Received:2021-03-27 Online:2021-10-25 Published:2021-12-08

摘要: 利用差示扫描量热分析(DSC)、等离子体质谱仪、透射电镜对新能源汽车无取向硅钢不同加热温度下的第二相固溶情况进行了研究。结果表明,加热至1076.2 ℃时,试验钢发生明显相变。在保温40 min的条件下,随着加热温度的升高,Nb、Ti元素固溶量逐渐增加,析出量相应减少,并发现析出物多为(Nb,Ti)C复合型析出。不同加热温度下,析出物平均尺寸有所不同,且随试验温度升高呈上升趋势。

关键词: 无取向硅钢, 新能源汽车, 加热温度, 固溶, 析出物

Abstract: Solid solution behaviors of the secondary phases in non-oriented silicon steel for new energy vehicles at different heating temperatures were studied by means of differential scanning calorimetry (DSC), plasma mass spectrometer and transmission electron microscope. The results show that when heated to 1076.2 ℃, the tested steel undergoes significant phase transformation. Under the condition of holding for 40 min, with the increase of heating temperature, the amount of Nb and Ti elements in solid solution gradually increase, and that in precipitates decrease correspondingly, and most of the precipitates are (Nb,Ti)C. Under different heating temperatures, the average size of the precipitates is different, and it shows an upward trend with the increase of the tested temperature.

Key words: non-oriented silicon steel, new energy vehicles, heating temperature, solid solution, precipitates

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