Magnetostriction of Terfenol-D heat treated under compressive stress

Author

Wun-Fogle, M. ; Restorff, J.B. ; Leung, K. ; Cullen, J.R. ; Clark, A.E.

Author_Institution

Carderock Div., Naval Surface Warfare Center, West Bethesda, MD, USA

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3817

Lastpage

3819

Abstract

Heat treatment at temperatures >835°C and compressive stresses >80 MPa substantially increased the magnetostrictive performance of Terfenol-D (Tb_0.3Dy_0.7Fe_1.92) under the condition of zero loading. This heat treatment created a built-in prestress which significantly increased the low stress magnetostriction and substantially altered the magnetization curve by reducing its initial susceptibility. For measurements at compressive stresses >15 MPa the effect of the built-in stress was minimal and the magnetostrictive performance was not appreciably altered

Keywords

dysprosium alloys; ferromagnetic materials; heat treatment; iron alloys; magnetic susceptibility; magnetisation; magnetostriction; terbium alloys; Tb_0.3Dy_0.7Fe_1.92; Terfenol-D; built-in prestress; built-in stress; compressive stress; compressive stresses; heat treatment; initial susceptibility; magnetization curve; magnetostriction; zero loading; Compressive stress; Heat treatment; Internal stresses; Magnetic field induced strain; Magnetic materials; Magnetic separation; Magnetization; Magnetostriction; Stress measurement; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800675

Filename

800675