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 |
|---|---|
| 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
Fingerprint Dive into the research topics of 'Suppression of non-oriented grains in Nd-Fe-B hot-deformed magnets by Nb doping'. Together they form a unique fingerprint.
Cite this
Tang, X., Sepehri-Amin, H., Ohkubo, T., & Hono, K. (2018). Suppression of non-oriented grains in Nd-Fe-B hot-deformed magnets by Nb doping. Scripta Materialia, 147, 108-113. https://doi.org/10.1016/j.scriptamat.2017.12.032