Twisting and Reverse Magnetic Field Effects on Energy Conversion of Magnetostrictive Wire Metal Matrix Composites
Twisting and Reverse Magnetic Field Effects on Energy Conversion of Magnetostrictive Wire Metal Matrix Composites
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DOI：
10.1002/pssr.202000281
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发表时间：
2020-07
期刊：
影响因子：
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通讯作者：
Zhenjun Yang;Zhenjin Wang;Manabu Seino;Daisuke Kumaoka;G. Murasawa;F. Narita
中科院分区：
文献类型：
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作者：
Zhenjun Yang;Zhenjin Wang;Manabu Seino;Daisuke Kumaoka;G. Murasawa;F. Narita
轻质金属基复合材料因其在航空航天、汽车、体育用品等领域的技术应用而备受关注，其多功能性将进一步扩大其应用范围。本文研究了一种轻质的1-3型磁致伸缩FeCo/AlSi复合材料，考察了特定的结构设计和反向磁场对压缩下能量转换的影响。对压缩前FeCo/AlSi复合材料的显微组织进行了观察，结果表明，复合材料具有较大的结合界面，有利于应变/应力的传递。与采用直FeCo丝的FeCo/AlSi复合材料相比，采用扭转FeCo丝的设计显著提高了磁致伸缩FeCo/AlSi复合材料的输出性能。此外，通过比较FeCo/AlSi复合材料在N-S模式（正向磁化）和N-N模式（反向磁化）下的输出电压，发现反向磁化能显著提高能量转换效率。此外，输出电压的理论计算结果与实际测量结果基本一致。
Lightweight metal matrix composites have attracted a great attention for their technological application in aerospace, automotive, or sporting goods, and the multifunctionality of these composites will further expand the range of applications. Herein, a kind of lightweight 1–3 magnetostrictive FeCo/AlSi composites is investigated to evaluate the effects of the specific structure design and reverse magnetic field on the energy conversion under compression. The microstructure of the FeCo/AlSi composite before compression was observed, and the results indicate that there is a large bonding interface, which has the benefits of strain/stress transfer. Compared with the FeCo/AlSi composite with straight FeCo wire, a design with twisted FeCo wire significantly enhances the output performance of the magnetostrictive FeCo/AlSi composite. Furthermore, comparison of the output voltage for the FeCo/AlSi composite in the N–S mode (forward magnetization) and N–N mode (reverse magnetization) reveals that the reverse magnetization can improve the efficiency of the energy conversion notably. In addition, the results of the output voltage in the theoretical calculation are virtually consistent with that in practical measurement.