Influence of laser speed and power on the magnetic properties of Fe-50 Wt% Ni Alloy manufactured by LPBF

Guerra, C., Ramos-Grez, J., Setchi, Rossi ORCID: https://orcid.org/0000-0002-7207-6544, Anderson, P., Biyiklioglu, M. and La Fe, I. 2024. Influence of laser speed and power on the magnetic properties of Fe-50 Wt% Ni Alloy manufactured by LPBF. Presented at: 10th International Conference on Sustainable Design and Manufacturing (KES-SDM 2023), 18-20 September 2023. Published in: Scholz, Steffen G., Howlett, Robert J. and Setchi, Rossi eds. Sustainable Design and Manufacturing 2023: Proceedings of the 10th International Conference on Sustainable Design and Manufacturing (KES-SDM 2023). , vol.377 pp. 169-178. 10.1007/978-981-99-8159-5_15

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Abstract

Soft magnetic materials are used in a wide range of devices, including mobile phones, computers, motors, and inductors. Among the soft magnets, the Fe-50 wt% Ni alloy exhibits superior properties such as high magnetic saturation and permeability with low coercivity, when manufactured by conventional methods such as injection moulding. However, until now, it is not clear if modern manufacturing methods such as those based on laser powder bed fusion can affect the magnetic response. This work aims to determine experimentally the influence of laser speed and power through additive manufacture and subsequent magnetic characterization of the manufactured samples. These measurements were compared with those of a commercial sample obtained via conventional fabrication methods. The results show that it is possible to achieve magnetic saturation similar to the commercial samples, with both values of ~1.7 T and acceptable permeability of 66 A·m−1 compared to the commercial ones 159 A·m−1 if samples were fabricated with 190 W laser power and 300 m·s−1 laser speed.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
ISBN:	9789819981588
ISSN:	2190-3018
Date of Acceptance:	15 June 2023
Last Modified:	17 Apr 2024 09:54
URI:	https://orca.cardiff.ac.uk/id/eprint/166919

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