Improvement of Magnetostrictive Properties of Fe-15mol%Ga Alloy by Texture Formation during High Temperature Uniaxial Compression Deformation
Improvement of Magnetostrictive Properties of Fe-15mol%Ga Alloy by Texture Formation during High Temperature Uniaxial Compression Deformation
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DOI：
10.2355/isijinternational.isijint-2016-542
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发表时间：
2017-04
影响因子：
1.8
通讯作者：
Y. Onuki;S. Fujieda;Shigeru Suzuki;H. Fukutomi
中科院分区：
文献类型：
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作者：
Y. Onuki;S. Fujieda;Shigeru Suzuki;H. Fukutomi
基于高温形变织构形成的“优先动态晶粒生长（PDGG）”机制，研究了高温形变对Fe-Ga固溶体合金织构的控制。Fe-15 mol% Ga合金在1 173 K下进行单轴压缩变形时，观察到沿着压缩轴方向的尖锐取向。EBSD显微结构观察表明，取向晶粒的生长是导致取向排列的主要原因。所观察到的织构和显微结构与以前的Fe-Si合金研究中所见的相似，其中证实了PDGG的活化。因此，PDGG可以作为Fe-Ga合金的织构控制技术。变形样品的饱和磁致伸缩系数比未变形样品的大，表明高温变形对织构控制的有效性。
The texture control of Fe–Ga solid solution alloy is examined by high temperature deformation, based on the previously suggested mechanism of high temperature deformation texture formation, “preferential dynamic grain growth (PDGG)”. As the result of uniaxial compression deformation of Fe-15 mol% Ga alloy at 1 173 K, sharp alignment of along the compression axis was observed. Microstructural observation by EBSD revealed that the alignment was attributable to the growth of oriented grains. The observed textures and microstructures were similar to those seen in the previous studies of Fe–Si alloys, in which the activation of PDGG was confirmed. Based on these facts, it is concluded that PDGG can be applied as a texture control technique for Fe–Ga alloy. The deformed sample showed larger saturation magnetostriction than the sample without deformation, indicating the effectiveness of the texture control by high temperature deformation.