Please use this identifier to cite or link to this item: doi:10.22028/D291-38103
Title: Selective laser melting of a Fe-Si-Cr-B-C-based complex-shaped amorphous soft-magnetic electric motor rotor with record dimensions
Author(s): Thorsson, Lena
Unosson, Mattias
Teresa Pérez-Prado, María
Jin, Xueze
Tiberto, Paola
Barrera, Gabriele
Adam, Bastian
Neuber, Nico
Ghavimi, Amirhossein
Frey, Maximilian
Busch, Ralf
Gallino, Isabella
Language: English
Title: Materials & Design
Volume: 215
Publisher/Platform: Elsevier
Year of Publication: 2022
Free key words: Additive manufacturing
Bulk metallic glasses
Fe-based alloys
Soft-magnetic properties
Synchrotron x-ray diffraction
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: A record large amorphous rotor bearing an intricate 3D-geometry is produced through additive manufacturing via selecting laser melting using a powder of a bulk metallic glass-forming composition of the FeSi-Cr-B-C system. Not only does this technique overcome the technical limitations characteristic of casting processes for amorphous alloys, but also the possibility to print complex 3D geometries is expected to greatly facilitate the channelling of the magnetic flux, when such component is used as a rotor in an electric machine. The rotor is characterized in comparison to the powder material as well as the as-spun ribbon using complementary techniques, including synchrotron x-ray diffraction, calorimetry, scanning and transmission electron microscopy as well as room temperature ferromagnetic and hardness testing. The rotor has extraordinarily high values of hardness (877 HV), high electrical resistivity (178.2 mX cm) and remarkable high magnetic susceptibility (9.17). This latter feature leads to a better magnetic response in the presence of an external magnetic field evidenced by a faster approach to saturation. The coercivity is relatively small (0.51 kA/m) and the magnetic saturation relatively high (1.29 T). In addition, a large anisotropic effect on the magnetization response in connection with partial crystallization in the melt pool areas is assessed experimentally.
DOI of the first publication: 10.1016/j.matdes.2022.110483
URL of the first publication:
Link to this record: urn:nbn:de:bsz:291--ds-381034
ISSN: 0264-1275
Date of registration: 21-Nov-2022
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Ralf Busch
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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