Rare earth-iron permanent magnets by rapid solidification

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5450797

Croat, J J ^[1]

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1. General Motors Corp., Anderson, IN (USA)

The hard magnetic properties of rapidly quenched R-Fe-B alloys are reported. Energy products of these isotropic materials for R=Nd and Pr can exceed 14 MGOe with intrinsic coercivities greater than 15 kOe. Magnetic hardening is achieved by quenching directly from the melt or by annealing an over-quenched precursor; in both instances a finely crystalline microstructure of a R{sub 2}Fe{sub 14}B intermetallic phase develops. Microstructure-property relationships for materials prepared by both techniques are discussed.

• OSTI ID: 5450797
• Report Number(s): CONF-840909-; CODEN: TMPSA
• Journal Information: TMS (The Metallurgical Society) Paper Selection; (USA), Vol. 56; Conference: TMS-AIME fall meeting, Detroit, MI (USA), 16-20 Sep 1984; ISSN 0197-1689
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON ALLOYS
MAGNETIC PROPERTIES
MICROSTRUCTURE
IRON ALLOYS
RARE EARTH ALLOYS
ANNEALING
BORIDES
CRYSTAL STRUCTURE
FABRICATION
HARDENING
INTERMETALLIC COMPOUNDS
NEODYMIUM ALLOYS
PRASEODYMIUM ALLOYS
QUENCHING
SOLIDIFICATION
ALLOYS
BORON COMPOUNDS
HEAT TREATMENTS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
360102* - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties