Equal channel angular extrusion for bulk processing of Fe–Co–2V soft magnetic alloys, part II: Texture analysis and magnetic properties
Equal channel angular extrusion for bulk processing of Fe–Co–2V soft magnetic alloys, part II: Texture analysis and magnetic properties
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用于批量加工 Fe-Co-2V 软磁合金的等通道角挤压，第二部分：织构分析和磁性能
DOI：
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发表时间：
2018
影响因子：
2.7
通讯作者：
T. Jozaghi
中科院分区：
文献类型：
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作者：
A. Kustas;J. Michael;D. Susan;I. Karaman;T. Jozaghi
在第一部分中，证明了等通道转角挤压(ECAE)是一种新的、简单的剪切变形工艺，可以生产出细小晶粒度的块状低塑性Fe-Co-2V(Hiperco 50A®)软磁合金。讨论了其显微组织和力学性能。在第二部分中，对ECAE处理的Hiperco的晶体织构和准静态磁性能进行了表征。织构是由相对于挤压方向倾斜的部分{110}和<111>纤维定义的简单剪切织构，与体心立方金属的简单剪切变形织构的预期一致。在所有的加工条件下都观察到了这些织构，只有在随后的再结晶热处理中强度略有降低。磁性能的表征表明，ECAE处理的Hiperco样品比常规处理和退火热处理的Hiperco棒具有更低的矫直力和更高的磁导率。讨论了微结构和织构对磁体的矫直力和磁导率的影响。
In Part I, equal channel angular extrusion (ECAE) was demonstrated as a novel, simple-shear deformation process for producing bulk forms of the low ductility Fe–Co–2V (Hiperco 50A®) soft ferromagnetic alloy with refined grain sizes. Microstructures and mechanical properties were discussed. In this Part II contribution, the crystallographic textures and quasi-static magnetic properties of ECAE-processed Hiperco were characterized. The textures were of a simple-shear character defined by partial {110} and 〈111〉 fibers inclined relative to the extrusion direction, in agreement with the expectations for simple-shear deformation textures of BCC metals. These textures were observed throughout all processing conditions and only slightly reduced in intensity by subsequent recrystallization heat treatments. Characterization of the magnetic properties revealed a lower coercivity and higher permeability for ECAE-processed Hiperco specimens relative to the conventionally processed and annealed Hiperco bar. The effects of the resultant microstructure and texture on the coercivity and permeability magnetic properties are discussed.