Original Fe–Co–Ni–Ga–Nb Multicomponent Alloy with Soft Magnetic Properties

• Published in: Advanced engineering materials Vol. 23; no. 5
• Main Authors: Cardoso, Fábio Martins, Bormio-Nunes, Cristina
• Format: Journal Article
• Language: English
• Published: 01.05.2021
• Subjects: Fe–Co–Ni–Ga–Nb; high-entropy alloys; magnetic alloys; multicomponent alloys; relative permeability
• ISSN: 1438-1656; 1527-2648
• DOI: 10.1002/adem.202001359

Herein, the study of a multicomponent alloy comprising Fe, Co, Ni, Ga, and Nb is presented. The study begins with analysis of small samples, and these samples results conducted to the production of a laminated alloy with composition FeCoNi(GaNb)0.20, which has its magnetostriction roundly determined. This alloy is found to have longitudinal magnetostriction of less than 5 ppm. In addition, the material shows high values of initial and maximum relative permeabilities of 1160 and 1340, respectively. The saturation magnetization of the alloy is 97.4 Am2 kg−1, and the electrical resistivity is 88 μΩ cm. Moreover, it is demonstrated that this alloy has good mechanical workability. Overall, the studied FeCoNi(GaNb)0.20 alloy has potential to be used in electric machines and magnetic devices that work in the subkilohertz frequency range. The successful production of the alloy sheet attests alloy's good mechanical workability. In addition, the most important virtues of the material are the low magnetostriction <5 ppm, coercive field of 189 A m−1 and resistivity of 88 μΩ cm. These propeties nominate it to be used in magnetic devices that work in the sub‐kHz frequency range.