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

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

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Article in Materials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Xinyu YangSchool of Rare Earths, University of Science and Technology of China, Hefei 230026, China.ORCID 0000-0001-6245-4751

Shuheng QiuNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.ORCID 0000-0002-4098-2139

Yuheng WangFaculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China.ORCID 0000-0001-6394-1455

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

Yunpeng GaoNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.

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

Chi ZhangNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.ORCID 0000-0002-1097-7101

Funding

'Pioneer and Leading Goose' R&D Program of Zhejiang No.2022C01023The National Key R&D Program of China No.2021YFB3803004

6 · The paper itself

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.

Indexed as

affected area divisionamorphous alloydomain distribution quantificationmodified core loss modelperformance deterioration mechanismwire-cut electric discharge machining

Identifiers

PMID36984155

DOI10.3390/ma16062275

PMCPMC10052962

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