20.500.12556/DiRROS-23876 Effect of hardening on the magnetic behavior of AISI 1045 steel Hardening is an effective method to improve the hardness of the steel construction elements of an electric machine, such as rotor shaft. Surface hardening is typically employed for shafts as it provides a material with hard wear-resistant surface (martensite) and tough and ductile core (ferrite and pearlite), with the transitional zone between them (martensite, ferrite, and pearlite). The investigations were performed on the specimens of AISI 1045 steel, which is commonly used in electric machines. There were three categories of specimens, each of them representing a region in a surface hardened shaft – normalized specimens found in as-delivered steel (core), partially hardened specimens obtained by partial hardening of normalized specimens (transitional zone), and fully hardened specimens (hardened surface), also obtained from the normalized steel. Comparison of the magnetization curves showed that partially and fully hardened specimens exhibited a decrease of saturation magnetic flux density for about 11% and 7%, respectively, compared to the normalized specimens. The magnetizing curves from this study can be directly used in the magnetic simulations of a surface-hardened shaft. This allows more accurate electromagnetic design of electric machines, in which the shaft represents an important part of the magnetic circuit, e.g. two-pole wound-rotor synchronous machine. electric machine hardening hysteresis loop magnetic properties magnetizing curve microstructure shaft true false true IEEE IEEE Transactions on Magnetics Angleški jezik Ni določen © 2025 The Authors Neznano 2025-10-16 07:43:44 2025-10-16 07:43:45 2025-10-24 03:55:12 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 2. 10. 2025; [7] str. issue 10, [article no.] 2001107 Vol. 61 Okt. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-10-01 537 1941-0069 10.1109/TMAG.2025.3598357 245969155 RAZ_Vukotic_Mario_2025.pdf RAZ_Vukotic_Mario_2025.pdf 1 F16224BACC3D1BE9CACEC6D961C98830 02e602fe79428b84d9aa8d474bbda5c7a560738ba4c5e5c0a00850a24fe08b42 2c16e7c3-aa54-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=35417 https://ieeexplore.ieee.org/document/11124329 1 16932328-aa53-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=35416 Inštitut za kovinske materiale in tehnologije 0 0 0