Study on high damping L12/D03 biphase Fe-27Ga alloys with near-zero magnetostriction and its damping mechanism
Study on high damping L12/D03 biphase Fe-27Ga alloys with near-zero magnetostriction and its damping mechanism
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DOI：
10.1016/j.jallcom.2022.166554
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发表时间：
2022-07
影响因子：
6.2
通讯作者：
L. Li;Y.X. Gao;Z. Zhuang;M. Sun;W.B. Jiang;Hong Wang;Q. Fang;X.P. Wang
中科院分区：
文献类型：
--
作者：
L. Li;Y.X. Gao;Z. Zhuang;M. Sun;W.B. Jiang;Hong Wang;Q. Fang;X.P. Wang
A novel L12/D03biphase Fe-27Ga alloy with both high damping (0.007, equivalent to a specific damping capacity (SDC) of 0.04) and the near-zero (∼−4 ppm) magnetostriction has been prepared by using an appropriate heat treatment process: annealing at 480 °C for 1 h. Here the L12phase proportion is about 44.8%. More importantly, the damping mechanism of L12/D03biphase Fe-27Ga alloy has been deeply studied based on the experiments of amplitude-dependent IF measurements with and without magnetic field, combined with the magnetostriction measurements. All the results indicate that for the L12/D03biphase Fe-27Ga alloy, D03phase with a magnetic damping plays a dominant role under a lower strain amplitude while L12phase with a non-magnetic damping plays a main role under a higher strain amplitude. At the same time, the L12/D03biphase Fe-27Ga alloy with more L12phase has a higher damping capacity under a higher strain amplitude, which is mainly the non-magnetic damping contribution originated from the twin boundaries movement. This can provide a new way and design concept for high damping Fe-Ga alloys to satisfy more application requirements, such as micro-vibration field, strong vibration field, magnetic or non-magnetic field.
