期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 861, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.158450
关键词
High entropy alloys; X-ray diffraction; Phase transitions; Magnetism
资金
- Swedish Foundation for Strategic Research, project SSF Magnetic materials for green energy technology, SweGRIDS [EM-16-0039]
- Swedish Energy Agency
- Hoganas AB
- Swedish Research Council (VR)
The alloys of AlCoCrFeMnxNi were synthesized through arc-melting and gas atomisation to study the effect of Mn additions. It was found that an increase in Mn content adversely affected the thermal stability and saturation magnetisation of the alloy compared to AlCoCrFeNi.
Alloys of AlCoCrFeMnxNi (x = 0.0, 0.04, 0.08, 0.12 and 0.16) have been synthesized through arc-melting and gas atomisation (x = 0.0 and 0.16) to investigate the effect of Mn additions to AlCoCrFeNi. Here, the structure, magnetic properties and the thermal stability of the alloys is presented. Electron microscopy confirmed the elemental composition and revealed the microstructure to consist of two spinodally decomposed phases. Rietveld analysis of standard powder X-ray diffraction showed the arc-melted samples consisted of two phases, a B2 phase and a bcc phase while the gas atomised powders consisted of a singlephased B2 structure. Magnetic measurements revealed an increase in the saturation magnetisation at room temperature by 68% for AlCoCrFeMnNi compared to AlCoCrFeNi. The thermal stability of the alloys was investigated using magnetometry, differential scanning calorimetry and in-situ X-ray diffraction, which showed that an increase in Mn content adversely effected the thermal stability of the alloy. (C) 2021 The Authors. Published by Elsevier B.V.
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