Grain growth and alignment in hot deformed Nd-Fe-B magnets

Journal Article · Fri Apr 15 04:00:00 EDT 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.340731· OSTI ID:5391006

Mishra, R K; Brewer, E G; Lee, R W

Formation of grain oriented Nd-Fe-B magnets from melt-spun ribbons by hot deformation has been studied using electron microscopy. It is shown that deformation and alignment of Nd/sub 2/Fe/sub 14/B magnets result from a combination of plastic deformation, grain boundary migration, and grain boundary sliding. Due to a limited number of available slip systems in this material, samples with large grains deform less easily. Small grain size materials, as encountered in the melt-spun ribbons, are well suited for die-upsetting to produce oriented magnets.

• Research Organization: Physics Department, General Motors Research Laboratories, Warren, Michigan 48090-9055
• OSTI ID: 5391006
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 63:8; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104* -- Metals & Alloys-- Physical Properties
ALIGNMENT
ALLOYS
BORON ALLOYS
CRYSTAL STRUCTURE
DEFORMATION
ELECTRON MICROSCOPY
FABRICATION
FILAMENTS
GRAIN BOUNDARIES
GRAIN GROWTH
GRAIN SIZE
HOT PRESSING
IRON ALLOYS
IRON BASE ALLOYS
MAGNETIC PROPERTIES
MAGNETS
MATERIALS WORKING
MICROSCOPY
MICROSTRUCTURE
NEODYMIUM ALLOYS
PERFORMANCE
PERMANENT MAGNETS
PHYSICAL PROPERTIES
PRESSING
RARE EARTH ALLOYS
SIZE