Microstructure evolution of hot-deformed Nd-Fe-B anisotropic magnets

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4867960· OSTI ID:22273763

Hono, K. ^[1]; Sepehri-Amin, H.; Ohkubo, T. ^[1]; Hioki, K.; Hattori, A. ^[2]

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1. Elements Strategy Initiative Center for Magnetic Materials, National Institute for Materials Science, Tsukuba 305-0047 (Japan)
2. Daido Steel Co. Ltd., Nagoya 457-8545 (Japan)

The microstructural evolution of hot-deformed Nd-Fe-B magnets in each stage of hot-deformation process was studied using transmission electron microscopy and three dimensional atom probe (3DAP). The anisotropic growth of initially isotropic grains in rapidly solidified alloy occurs by annealing without pressing. 3DAP analyses showed a higher concentration of rare-earth elements in the intergranular phase parallel to the flat surface of platelet shaped Nd{sub 2}Fe{sub 14}B grains compared to that in the intergranular phase at the side of platelets.

• OSTI ID: 22273763
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
ANNEALING
COMPARATIVE EVALUATIONS
CONCENTRATION RATIO
DEFORMATION
GRAIN GROWTH
IRON BORIDES
MAGNETIC MATERIALS
MAGNETS
MICROSTRUCTURE
NICKEL COMPOUNDS
SURFACES
TRANSMISSION ELECTRON MICROSCOPY