Abstract
0.2 at.%Nb doping to a Nd12.83Fe76.7Co4.50Ga0.53B5.44 alloy suppress the surface crystallization in melt-spun ribbon, thereby suppressing the formation of non-oriented grains during the hot-deformation process to form bulk anisotropic magnet, which leads to the enhancement of remanence. High resolution transmission electron microscopy and three-dimension atom probe tomography revealed that the segregation of Nb at the grain boundaries hinders the grain growth during the hot-deformation process, thereby reducing the size and the aspect ratio of Nd2Fe14B grains and increasing coercivity.
Original language | English |
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Pages (from-to) | 108-113 |
Number of pages | 6 |
Journal | Scripta Materialia |
Volume | 147 |
DOIs | |
Publication status | Published - 2018 Apr 1 |
Externally published | Yes |
Keywords
- Coercivity
- Hot-deformed magnet
- Nd-Fe-B
- Permanent magnet
- Remanence
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys