SKM 2021 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 15: Posters Magnetism IV

MA 15.33: Poster

Donnerstag, 30. September 2021, 13:30–16:30, P

Progress in Additive Manufacturing of (Pr,Nd)-Fe-Cu-B Permanent Magnets — •Jianing Liu¹, Lukas Schäfer¹, Konstantin Skokov¹, Holger Merschroth², Jana Harbig², Ying Yang³, Matthias Weigold², Stefan Barcikowski³, and Oliver Gutfleisch¹ — ¹Functional Materials, Technical University of Darmstadt, Germany — ²Institute of Production Management, Technology and Machine Tools, Technical University of Darmstadt, Germany — ³Technical Chemistry I, University of Duisburg-Essen, Germany

Additive Manufacturing (AM) of permanent magnets is an upcoming and challenging task in material science and engineering. The direct use of binder-free AM technique like Laser Powder Bed Fusion (L-PBF) does not easily allow obtaining a microstructure necessary for high coercivity. In order to achieve the desired microstructure and hard magnetic properties after printing, we propose here Pr-Fe-Cu-B based alloy as a useful alloy system and compare this with its Nd-based counterpart. Our studies describe the Pr-Fe-Cu-B alloys and their annealing optimization for L-PBF. In order to achieve an improved flowability and refined microstructure, the grain boundary engineering with nanoparticles shows a great potential. The nanoparticle functionalized Pr-Fe-Cu-B powder was being validate as precursor for AM. During L-PBF, the hypothesis of heterogeneous nucleation induced by NP inoculums during resolidification is explored with the goal of suppressing grain coarsening and realizing more uniaxial growth.

We acknowledge the support of the Collaborative Research Centre/Transregio 270 HoMMage.