Published April 2018 | Version v1
Journal article Metadata-only

Suppression of non-oriented grains in Nd-Fe-B hot-deformed magnets by Nb doping

Creators

  • 1. Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8577 (Japan)
  • 2. Elements Strategy Initiative Center for Magnetic Materials, National Institute for Materials Science, Tsukuba 305-0047 (Japan)

Description

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.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2017.12.032

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2017.12.032;
PII
S1359646217307327;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
147
Journal Page Range
p. 108-113
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
50052989
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALLOYS; ANISOTROPY; ASPECT RATIO; ATOMS; BORON; COBALT; COERCIVE FORCE; CRYSTALLIZATION; DEFORMATION; GALLIUM; GRAIN BOUNDARIES; GRAIN GROWTH; INHIBITION; IRON; MAGNETS; NEODYMIUM; NIOBIUM; SEGREGATION; TOMOGRAPHY; TRANSMISSION ELECTRON MICROSCOPY
Descriptors DEC
DIAGNOSTIC TECHNIQUES; DIMENSIONLESS NUMBERS; ELECTRON MICROSCOPY; ELEMENTS; EQUIPMENT; METALS; MICROSCOPY; MICROSTRUCTURE; PHASE TRANSFORMATIONS; RARE EARTHS; REFRACTORY METALS; SEMIMETALS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.