Improved magneostriction and mechanical properties in dual-phase FeGa single crystal
Improved magneostriction and mechanical properties in dual-phase FeGa single crystal
复制标题
改善双相 FeGa 单晶的磁致伸缩和机械性能
DOI：
10.1080/21663831.2018.1451403
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发表时间：
2018
影响因子：
8.3
通讯作者：
Jiang Chengbao
中科院分区：
文献类型：
--
作者：
Wu Yuye;Fang Lei;Meng Chongzheng;Chen Yijun;Wang Jingmin;Liu Jinghua;Zhang Tianli;Jiang Chengbao
摘要：单相Fe81Ga19和双相Fe0。81 ga0。19) 99.95 Tb0。采用定向凝固技术制备了取向完美的05个单晶。双相单晶（SC）的磁致伸缩率为399 ppm，拉伸断裂应变为10.2%，分别是单相Fe81Ga19 SC的28%和5倍。双相SC中微量的Tb固溶体和分散分布的富Tb颗粒分别提高了磁致伸缩率和塑性。这种双相SC在结构和功能性能上都具有显著的优势，可以成为新一代磁致伸缩材料的候选材料。本双相(Fe0。81 ga0。19) 99.95 Tb0。05单晶结合了大的磁致伸缩和优异的力学性能，是在结构性能和功能性能上都能满足应用要求的新一代磁致伸缩材料。
ABSTRACT Single-phase Fe81Ga19 and dual-phase (Fe0. 81Ga0. 19) 99.95 Tb0. 05 single crystals with perfect orientation were prepared by directional solidification technology. The performance of the dual-phase single crystal (SC) can achieve 399 ppm in magnetostriction and 10.2% in tensile fracture strain, which are, respectively, 28% and 5 times larger than those in single-phase Fe81Ga19 SC. The slight solid solution of Tb and dispersive distributed Tb-rich particles in dual-phase SC, respectively, lead to the improvement in magnetostriction and ductility. This dual-phase SC can become the candidate for new-generation magnetostrictive materials combining significant advantages in both structural and functional properties. Impact statement This dual-phase (Fe0. 81Ga0. 19) 99.95 Tb0. 05 single crystal combining large magnetostriction and excellent mechanical properties can be new-generation magnetostrictive materials which can satisfy the application requirement in structural and functional properties.