JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 卷:527 |
Magnetic ageing investigation of bulk low-carbon silicon steel | |
Article | |
Jamil, Meryeme Toto1,2  Benabou, Abdelkader1  Clenet, Stephane1  Shihab, Sylvain1  Arbenz, Laure Le Bellu2  Mipo, Jean-Claude2  | |
[1] Univ Lille, Arts & Metiers Inst Technol, Cent Lille, ULR 2697,L2EP, F-59000 Lille, France | |
[2] Valeo Powertrain Syst, 2 Rue Andre Charles Boulle, F-94046 Creteil, France | |
关键词: Magnetic ageing; Magnetic losses; Precipitation; Bulk low carbon silicon steel; | |
DOI : 10.1016/j.jmmm.2021.167761 | |
来源: Elsevier | |
【 摘 要 】
In this paper, the magnetic ageing of a bulk forged non-annealed magnetic core, used in claw pole synchronous machine, is investigated. The study is carried out by characterizing the material properties of two groups of samples subjected to a thermal ageing at 180 degrees C that corresponds to the maximum operating temperature of the claw pole rotor. The investigated characteristics are the electrical conductivity, the magnetic properties, the material microstructure and the Vickers hardness. They were characterized along with the ageing time. The results show that, during the thermal ageing, the hysteresis losses and the Vickers hardness have been affected by the magnetic ageing, whereas the electric conductivity and the normal B-H curve have not been modified. The microstructure analyses showed that carbides precipitates were the main cause behind the magnetic ageing. Moreover, the comparison between the results of two groups of samples revealed the possibility that the magnetic ageing of the material could have started during the manufacturing process of the magnetic core.
【 授权许可】
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【 预 览 】
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