Title :
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
fDate :
9/1/1999 12:00:00 AM
Abstract :
Heat treatment at temperatures >835°C and compressive stresses >80 MPa substantially increased the magnetostrictive performance of Terfenol-D (Tb0.3Dy0.7Fe1.92 ) 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; Tb0.3Dy0.7Fe1.92; 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;
Journal_Title :
Magnetics, IEEE Transactions on
