Toward understanding the microstructure characteristics, phase selection and magnetic properties of laser additive manufactured Nd-Fe-B permanent magnets

2023/10/18 by Bo Yao, Nan Kang, Xiangyu Li +6 · 1 voice · 1 citation
Materials Science · #Hydrogen Storage and Materials #Magnetic Properties of Alloys #Metallurgical and Alloy Processes

paper · pdf · doi:10.1088/2631-7990/ad0472

openalex publication_date 2023/10/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

Highlights Nd-Fe-B permanent magnets with different solidification conditions are prepared using vacuum induction melting (VIM), laser directed energy deposition (LDED) and laser powder bed fusion (LPBF) technologies, respectively. The intrinsic relationship among the microstructure evolution, phase selection and magnetic properties of the Nd-Fe-B magnets under different solidification conditions is clarified in detail. The solidification velocity ( V ) and cooling rate ( R ) are key factors in determining the phase selection of Nd-Fe-B magnets. A coercivity of 656 kA m −1 , a remanence of 0.79 T and maximum energy product of 71.5 kJ m −3 are achieved in the LPBF Nd-Fe-B magnet.

Citations

• Progress and perspectives in laser additive manufacturing of key aeroengine materials

Cited by

• Recent innovations in laser additive manufacturing of titanium alloys

Discussions

• Rapid solidification via #LaserPowderBedFusion refines microstructure, drives Nd₂Fe₁₄B hard phase formation, suppresses soft phases, and boosts coercivity, remanence & energy product, outperforming VI [bsky, 0 points, 0 comments]