Damping Capacity of Fe-Ga Alloys

Abstract:

The damping capacity of Fe-Ga rods and sheets has been studied using a computer-controlled automatic inverted torsion pendulum instruments in a wide temperature range in a series of frequency. The frequency and temperature has different influence on the damping capacity of solidified Fe83Ga17 rods and (Fe83Ga17)97.25Cr2B0.75 sheets. The damping capacity of all specimens increased with frequencies. The solidified Fe-Ga rods showed an obvious low-temperature peak and a potential high-temperature peak with increasing temperature. However, the damping capacity of Fe-Ga sheets kept steady in a wide temperature range and then rapidly increased on further heating above 400°C. Damping capacity of about 0.02 was obtained in both Fe-Ga rods and sheets at temperatures from room temperature to 500°C. Thus, The Fe-Ga alloys are considered to be a class of promising high damping alloys.

• Periodical: Advanced Materials Research (Volumes 228-229)
• Pages: 937-941
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.228-229.937
• Online since: April 2011
• Authors: Fang Mei Ling, Jie Zhu, Li Ji Heng, Gao Xue Xu
• Keywords: Damping, Fe-Ga Alloys, Magnetoelastic, Magnetostriction

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