Highentropy soft magnetic alloy FexCo6Al3Ni2Si with high hardness and compressive strength

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-03-20 DOI:10.1016/j.jmmm.2025.172993

Artem Kim , Alina Mazeeva , Nikolay Razumov , Ekaterina Volokitina , Denis Nazarov , Anatoliy Popovich

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引用次数: 0

Abstract

In this work, the high-entropy alloy Fe_xCo₆Al₃Ni₂Si (where x = 5, 6, 8) was obtained by mechanical alloying. The microstructure, phase and granulometric compositions of the obtained powders were studied. The required specific energy dose for the formation of a homogeneous solid solution (D = 30 W⋅h/g) was determined. Using the CALPHAD method, a phase diagram was constructed for the multicomponent system Fe_xCo₆Al₃Ni₂Si. The Fe₈Co₆Al₃Ni₂Si alloy powder after mechanical alloying showed a saturation magnetization of 154 emu/g and a coercive force of 53 Oe.

Compact samples were obtained from Fe₈Co₆Al₃Ni₂Si alloy powder in a spark plasma sintering unit and annealed at temperatures of 900, 950 and 1000 °C. The microstructure and phase composition of the samples after annealing were studied. Tests of the magnetic properties of the samples showed that the saturation magnetization of the samples was from 159 to 168 emu/g, the coercive force was from 8.9 to 29.2 Oe. The compressive strength of the samples was from 2190 to 2680 MPa, and the microhardness was from 681 to 811 HV.

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具有高硬度和抗压强度的高熵软磁合金FexCo6Al3Ni2Si

本文采用机械合金化法制备了高熵合金FexCo6Al3Ni2Si （x = 5,6,8）。研究了制备的粉末的显微组织、物相和颗粒组成。确定了形成均匀固溶体所需的比能剂量（D = 30 W·h/g）。利用CALPHAD方法，构建了多组分FexCo6Al3Ni2Si体系的相图。机械合金化后的Fe8Co6Al3Ni2Si合金粉末的饱和磁化强度为154 emu/g，矫顽力为53 Oe。将Fe8Co6Al3Ni2Si合金粉末在放电等离子烧结装置中烧结得到致密样品，并在900、950和1000℃的温度下退火。研究了退火后样品的显微组织和相组成。磁性能测试表明，样品的饱和磁化强度为159 ~ 168 emu/g，矫顽力为8.9 ~ 29.2 Oe。试样的抗压强度为2190 ~ 2680 MPa，显微硬度为681 ~ 811 HV。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.