학술논문
Modeling the Impact of Laser Powder Bed Fusion on Nd-Fe-B Permanent Magnets
Document Type
Conference
Source
2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers) Magnetic Conference - Short Papers (INTERMAG Short Papers), 2023 IEEE International. :1-2 May, 2023
Subject
Language
Abstract
Statistical modelling was successfully applied to Laser Powder Bed Fusion (LPBF) of Nd-Fe-B permanent magnets to identify the potential impact of different process parameters and their interactions on resulting magnetic properties. Process models for the magnetic properties coercivity H c , remanence J r as well as for the shape of the demagnetization curve are obtained. The model quality for H c is excellent (R 2 = 0.99). The model for J r only allows a rough statement on the impact of the LPBF process due to a weaker quality of the model (R 2 = 0.77). It will not be possible to maximize H c and J r of LPBF manufactured Nd-Fe-B magnets at the same time due to their contrary dependencies on different LPBF parameters. We have predicted an optimized parameter set with a resulting high H c of 816 kA/m and a maximized J r of 0.65 T. From these properties and the calculated shape of the demagnetization curve we predict a (BH) max of 60.77 kJ/m 3 for a magnet processed on a LPBF machine AconityMINI using MQP™-S powder.