Affiliation:
1. Beijing University of Aeronautics and Astronautics
Abstract
Co and Si were selected as substitutes to improve performance of TbDyFe giant
magnetostrictive alloys for special purpose, respectively. The results showed that the Co-doped
Tb0.36Dy0.64Fe2 alloys can possess giant magnetostriction over a wide temperature range from -80 to
100 . Optimum magnetostriction, high electrical resistivity and improved corrosion resistance was
obtained in Tb0.3Dy0.7(Fe1-xSix)1.95 system. High performance grain-aligned rods with <110> preferred
orientation have been successfully prepared by zone melting unidirectional solidification. This paper
also presents the design and fabrication of Giant Magnetostrictive Actuator (GMA) for active
vibration control with oriented TbDyFe rods. Experimental results showed that the GMA possesses
good static and dynamic performance. Excellent damping effect, 20-30 dB under the frequency range
from 10 Hz to 120 Hz was obtained.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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