Mechanism of texture formation by hot deformation in rapidly quenched FeNdB

Journal Article · Tue May 01 04:00:00 EDT 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.344776· OSTI ID:7122519

Li, L; Graham, Jr, C D ^[1]

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1. Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (USA)

The development of crystallographic texture in rapidly quenched Fe{sub 14}Nd{sub 2}B has been investigated by hot deformation. The method was to catch the process in a state of partial completion, and then use transmission electron microscopy to examine the structure. The degree of texture formation was determined by x-ray diffraction and by magnetic measurements, and the hardness and the anisotropy in hardness were measured up to 600 {degree}C. It was concluded, in agreement with others but with additional evidence, that preferential growth of favorably oriented grains during plastic deformation produces the texture. The nature of the plastic deformation remains unclear, since no dislocations are observed in Fe{sub 14}Nd{sub 2}B. It was found that when samples are compressed at temperatures near 600 {degree}C under low stresses for long times, they become Nd rich at the bottom, presumably because of flow of the Nd-rich liquid phase under the influence of gravity. In such samples, plastic deformation and crystallographic orientation occurs preferentially at the Nd-rich end.

• OSTI ID: 7122519
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 67:9; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
BORIDES
BORON COMPOUNDS
COHERENT SCATTERING
CRYSTALLOGRAPHY
DEFORMATION
DIFFRACTION
ELECTRON MICROSCOPY
GRANULAR MATERIALS
IRON BORIDES
IRON COMPOUNDS
MAGNETIC PROPERTIES
MATERIALS
MICROSCOPY
NEODYMIUM BORIDES
NEODYMIUM COMPOUNDS
PHYSICAL PROPERTIES
QUENCHING
RARE EARTH COMPOUNDS
SCATTERING
TEXTURE
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION