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线切割放电加工后非晶合金铁心损耗劣化机理及高精度建模研究

Research on Deterioration Mechanism and High-Precision Modelling of the Core Loss for Amorphous Alloys after Wire-Cut Electric Discharge Machining.

作者信息

Yang Xinyu, Qiu Shuheng, Wang Yuheng, Zhao Pengfei, Gao Yunpeng, Wang Haifeng, Zhang Chi

机构信息

School of Rare Earths, University of Science and Technology of China, Hefei 230026, China.

Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China.

出版信息

Materials (Basel). 2023 Mar 12;16(6):2275. doi: 10.3390/ma16062275.

DOI:10.3390/ma16062275
PMID:36984155
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10052962/
Abstract

Amorphous alloys (AAs) have the advantage of low core loss. Thus, they can be used in high-speed motor applications. However, compared with the nominal performances, the performance of the wire-cut electric discharge machine (W-EDM)-processed AA iron core changes significantly, which limits its popularization. This paper focuses on the performance degradation mechanism of the AA ribbon caused by W-EDM and establishes a modified core loss model after machining. First, a 308 × 15 mm ribbon-shaped AA sample machined by W-EDM was prepared. The characterization and analysis of the magnetic properties, phase, magnetic domain, nano-indentation, micro-morphology, and composition were carried out. In this paper, by analysing the variation in the magnetic domain distribution based on domain width and nano-mechanical properties, it is proposed that the performance degradation range of AA ribbons processed by W-EDM is within 1 mm from the edge. By comparing the microscopic morphology and chemical composition changes in the affected and the unaffected area, this paper presents a mechanism for the property deterioration of W-EDM-processed AA ribbons based on electrochemical corrosion. Finally, a modified loss model for W-EDM-processed AAs is established based on the division of the affected area. This model can significantly improve the accuracy of core loss estimation in the medium- and high-frequency bands commonly used in high-speed motors.

摘要

非晶合金（AAs）具有低铁损的优点。因此，它们可用于高速电机应用。然而，与标称性能相比，线切割电火花加工（W-EDM）处理后的非晶合金铁芯性能发生了显著变化，这限制了其推广。本文重点研究了W-EDM导致非晶合金薄带性能退化的机理，并建立了加工后的修正铁损模型。首先，制备了一个由W-EDM加工的308×15mm带状非晶合金样品。对其磁性能、相、磁畴、纳米压痕、微观形貌和成分进行了表征和分析。本文通过分析基于畴宽和纳米力学性能的磁畴分布变化，提出W-EDM加工的非晶合金薄带性能退化范围在距边缘1mm以内。通过比较受影响区域和未受影响区域的微观形貌和化学成分变化，本文提出了一种基于电化学腐蚀的W-EDM加工非晶合金薄带性能劣化机理。最后，基于受影响区域的划分，建立了W-EDM加工非晶合金的修正损耗模型。该模型可以显著提高高速电机常用的中高频段铁芯损耗估计的准确性。

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本文引用的文献

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Effect of W Addition on Fe-P-C-B Soft-Magnetic Amorphous Alloy.添加W对Fe-P-C-B软磁非晶合金的影响。
Materials (Basel). 2022 Nov 25;15(23):8416. doi: 10.3390/ma15238416.
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Theoretical Prediction and Experimental Validation of the Glass-Forming Ability and Magnetic Properties of Fe-Si-B Metallic Glasses from Atomic Structures.基于原子结构的Fe-Si-B金属玻璃形成能力与磁性能的理论预测及实验验证
Materials (Basel). 2022 Apr 27;15(9):3149. doi: 10.3390/ma15093149.
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The Effect of Heat Treatment on the Corrosion Resistance of Fe-Based Amorphous Alloy Coating Prepared by High Velocity Oxygen Fuel Method.热处理对高速氧燃料法制备的铁基非晶合金涂层耐蚀性的影响
Materials (Basel). 2021 Dec 17;14(24):7818. doi: 10.3390/ma14247818.