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Proceedings Paper

Producing and quantifying induced uniaxial anisotropy in stress annealed polycrystalline Galfenol
Author(s): Jessica Boer; James B. Restorff; Eric Summers
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Paper Abstract

A process for inducing uniaxial anisotropy in 18.4 at% Galfenol has been developed, applied, and proven to be reliable. The stress annealing procedure that produces the most consistent results and induces the highest uniaxial anisotropy in FSZM Galfenol (6.35 mm &nullset;) is one modified from previous works by the Magnetic Materials Group at Naval Surface and Warfare Center (NSWC) - Carderock. Further modification in which applied stress is lowered and temperature is raised has proven most successful for stress annealing Bridgman Galfenol (20.83 mm &nullset;) and, in addition, has produced an increase in saturation magnetostriction. Model calculations show predicted tensile operation ranges, on average, of 69 MPa for research grade and 40 MPa for production grade FSZM 18.4 at% Galfenol in which full magnetostriction can be utilized.

Paper Details

Date Published: 20 April 2007
PDF: 12 pages
Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65262I (20 April 2007); doi: 10.1117/12.715135
Show Author Affiliations
Jessica Boer, Etrema Products, Inc. (United States)
James B. Restorff, Naval Surface Warfare Ctr. (United States)
Eric Summers, Etrema Products, Inc. (United States)

Published in SPIE Proceedings Vol. 6526:
Behavior and Mechanics of Multifunctional and Composite Materials 2007
Marcelo J. Dapino, Editor(s)

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