Multistep severe plastic deformation to achieve non-rare earth bulk magnets with high α-MnBi phase content

Autor:	Lukas Weissitsch, Stefan Wurster, Heinz Krenn, Andrea Bachmaier
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	High-pressure torsion annealing ferromagnetic materials hard magnetic materials non-rare earth Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 12, Iss 3, Pp 226-234 (2024)
Druh dokumentu:	article
ISSN:	21663831 2166-3831
DOI:	10.1080/21663831.2024.2316207
Popis:	The ferromagnetic α-MnBi phase as non-rare earth magnetic material has gained increasing interest, but the fabrication of large volumes containing a significant amount of α-MnBi is still challenging. Targeting successful processing strategies, we apply multistep severe plastic deformation with intermediate magnetic field assisted annealing. The subsequent severe plastic deformation renewed the high amount of material defects and lead to microstructural refinement of the previously formed α-MnBi phase. Thus α-MnBi phase content is enhanced during final annealing. Second, the magnetic coercivity increases. These results suggest that further optimization will pave the way towards non-rare-earth bulk magnetic materials with enhanced α-MnBi phase content.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/1dc590a1e000427d87c8a760b27c9994 Zobrazit plný text záznamu View record in DOAJ