在非定向钢中添加RE元素的多重影响
Guobao Li1, Yongjie Yang1, Zhenghua He2,3
1Baoshan Iron & Steel Cooperation Limited, Shanghai 201999, China.
Materials (Basel, Switzerland)
|January 25, 2025
概括
将稀土微量元素添加到钢中可以增强磁性,减少铁的损失. 非定向钢的最佳磁性性能是通过特定的RE含量和受控的加工实现的.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 纳米技术纳米技术
背景情况:
- 高档非定向钢对于高效的新能源和节能电机至关重要,需要高磁感应和低铁损耗.
- 开发具有低碳排放的可持续制造工艺是材料生产中的一个关键挑战.
研究的目的:
- 研究微量混合稀土元素 (RE) 在低碳排放过程中增强非定向钢的磁性特性方面的潜力.
- 阐明RE元素影响微观结构,纹理和内含物以提高磁性性能的机制.
主要方法:
- 含有微量混合稀土元素 (0.004-0.030%) 的无偏向钢.
- 分析RE兴奋剂对沉积物形成的影响,包括形态,粒径和晶体纹理 (λ和γ纹理).
- 在不同的火温度和RE度下评估磁性 (B50,P15/50).
- 开发一个包含RE元素效应的铁损耗计算模型.
主要成果:
- 微量再生能源元素促进了富含再生能源的沉物形成,这些沉物吸收了细微的含量,导致球形和显著增加的再结晶颗粒大小.
- 有利的 λ 纹理 (<001>//ND) 被促进,而有害的 γ 纹理 (<111>//ND) 被减少,从而增强磁性.
- 最佳的磁性特性 (较高的B50,较低的P15/50) 在较低的回火温度下,通过0.004%的RE实现.
- 过度的RE含量 (0.072%) 降低了磁性性能,由于稳定的沉物,较小的粒度和更强的γ纹理.
结论:
- 微量混合稀土元素提供了一个有前途的途径,以提高低碳排放的非定向钢的磁性.
- 这项研究提供了通过RE兴奋剂来控制微观结构,纹理和包含的洞察力,以优化磁性性能.
- 提出的铁损耗模型可以通过考虑RE元素的多方面的影响来指导先进的钢的设计.
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