Texture Development in Polycrystalline Fe-Ga Magnetostrictive Materials

Élaboration de la Texture de Matériaux Magnétostrictifs Polycristallins de Fe-Ga

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Authors
  1. Cheng, L.M.
  2. Ham-Su, R.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
Magnetostrictive Galfenol (Fe-Ga) is a promising and mechanically robust actuator material. Single crystals of Galfenol have been shown to exhibit up to 400 ppm magnetostrictive strains with saturating fields of several hundred oersteds. However, due to the high conductivity of Galfenol, device operation will require it to be laminated, or in thin sheet form, in order to avoid eddy current loses. One of the main challenges in producing engineering components from these materials is shaping of these materials while retaining a preferred crystallographic texture to optimize the magnetostrictive performance of the polycrystals. To produce large quantities of thin sheet Galfenol for future device applications, we are investigating the effects of rolling on texture evolution and magnetostrictive properties of polycrystalline Galfenol. This work includes experimental rolling, theoretical modeling and studies of high temperature polycrystalline plasticity. The purpose of this paper is to provide a brief description on the goals of the project, the planned research work and the results from preliminary experiments.

Il y a un résumé en français ici.

Keywords
Galfenol;magnetostrictive;texture;rolling
Report Number
DRDC-ATLANTIC-SL-2005-164 — Scientific Literature
Date of publication
01 Jul 2005
Number of Pages
7
DSTKIM No
CA026654
CANDIS No
524547
Format(s):
Electronic Document(PDF)

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