New Scanning Strategy Approach for Laser Powder Bed Fusion of Nd-Fe-B Hard Magnetic Material-Reference-Cited by-同舟云学术

New Scanning Strategy Approach for Laser Powder Bed Fusion of Nd-Fe-B Hard Magnetic Material

Published:2023-06-07 Issue:6 Volume:13 Page:1084
ISSN:2075-4701
Container-title:Metals
language:en
Short-container-title:Metals

Author:

Pelevin Ivan A.¹^ORCID,Terekhin Egor A.¹,Ozherelkov Dmitry Yu.¹^ORCID,Tereshina Irina S.¹²^ORCID,Karpenkov Dmitry Yu.³^ORCID,Bochkanov Fedor Yu.⁴^ORCID,Chernyshikhin Stanislav V.¹⁵^ORCID,Nalivaiko Anton Yu.⁶^ORCID,Gromov Alexander A.¹^ORCID

Affiliation:

1. Catalysis Lab, National University of Science and Technology MISIS, 119991 Moscow, Russia

2. Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia

3. Department of Magnetism, Lomonosov Moscow State University, 119991 Moscow, Russia

4. Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology MISIS, 119991 Moscow, Russia

5. Center for Materials Technologies, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia

6. Directorate of Science, Moscow Polytechnic University, 107023 Moscow, Russia

Abstract

Volumetric cubic and cylindrical samples from MQP-S Nd-Fe-B-type material were 3D-printed using the LPBF technique. Two different scanning strategies were used: the convenient single laser exposure scanning strategy and the newly proposed double scanning strategy aimed at improving the melting process and increasing the density of the synthesized material. Samples with a relative density value higher than 95% were obtained using the new scanning strategy by reducing void volume and cracks. This was achieved by decreasing internal stresses and reducing the tendency to form and propagate cracks. The double scanning strategy of half laser power followed by full power exposure provides higher magnetic properties (both coercive force and remanence). The coercive force increases with energy input decrease, while remanence has inverse dependence.

Funder

Russian Science Foundation

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

Link

https://www.mdpi.com/2075-4701/13/6/1084/pdf

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