论文标题
通过严重的塑料变形的质感散装Fe-Smco $ _ {5} $磁铁的制造
Manufacturing of Textured Bulk Fe-SmCo$_{5}$ Magnets by Severe Plastic Deformation
论文作者
论文摘要
软磁相之间的交换耦合在新型磁性材料的工程中起重要作用。为了实现交换耦合，必须使用两阶段的微观结构。如果将两个相位尺寸降低到纳米尺度，则该界面效应将进一步增强。同时，获得较大的样本维度是一项挑战。在这项研究中，Fe-Smco $ _ {5} $的粉末混合物和粉状粉末混合物已合并，并被高压扭转（HPT）变形，因为这项技术使我们能够生产出合理尺寸的批量磁性材料。此外，研究了研究通过HPT对Fe-Smco $ _ {5} $复合材料中的交换耦合而严重变形的影响。由于施加的剪切变形，可以在两个阶段获得纹理，从而导致各向异性磁性行为和改善的磁性性能。
Exchange-coupling between soft- and hard-magnetic phases plays an important role in the engineering of novel magnetic materials. To achieve exchange coupling, a two-phase microstructure is necessary. This interface effect is further enhanced if both phase dimensions are reduced to the nanometer scale. At the same time, it is challenging to obtain large sample dimensions. In this study, powder blends and ball-milled powder blends of Fe-SmCo$_{5}$ are consolidated and are deformed by high-pressure torsion (HPT), as this technique allows us to produce bulk magnetic materials of reasonable sizes. Additionally, the effect of severe deformation by ball-milling and severe plastic deformation by HPT on exchange coupling in Fe-SmCo$_{5}$ composites is investigated. Due to the applied shear deformation, it is possible to obtain a texture in both phases, resulting in an anisotropic magnetic behavior and an improved magnetic performance.
