Large magnetoelastic effects in amorphous magnetic alloys

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

OSTI ID:5448848

Savage, H T; Clark, A E ^[1]

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1. NSWC/WO, Silver Spring, MD (USA)

Magnetostrictive materials prepared with rapid solidification technology have the important property of an easily tailored magnetic state. When FeBSiC ribbons are properly field annealed a very small, but a well defined, transverse anisotropy is obtained. Microstructure is important in keeping a small cone of magnetization centered around the anisotropy axis. Experiments characterizing the microstructure are described. The longitudinal magnetization is largely rotational. A theory describing large changes in elastic moduli with field is then possible. The theory agrees well with experiment, where changes in Young's modulus of approximately 6 are observed with an applied field of about .7 Oe. The implication of the field dependent moduli is large longitudinal and torsional strain sensitivity. Experiments using susceptibility as the measurement parameter show longitudinal strain gage figures-of-merit two orders of magnitude higher than any strain gage presently available. Torsional results should be the same.

• OSTI ID: 5448848
• Report Number(s): CONF-840909--
• Conference Information: Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Journal Volume: 56
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALLOYS
AMORPHOUS STATE
ANISOTROPY
ANNEALING
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CRYSTAL STRUCTURE
ELASTICITY
HEAT TREATMENTS
IRON BORIDES
IRON COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MICROSTRUCTURE
PHYSICAL PROPERTIES
SILICON CARBIDES
SILICON COMPOUNDS
STRAIN RATE
TENSILE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YOUNG MODULUS