Microstructural Effect of Magnetic Properties of FeCo-based Soft Magnetic Alloys

R. H. Yu; S. Basu; Y. F. Li; Y. Zhang; G. C. Hadjipanayis; B. E. Lorenz; John Q. Xiao

doi:10.3379/jmsjmag.23.397

7.1 Alloys & Compounds

Microstructural Effect of Magnetic Properties of FeCo-based Soft Magnetic Alloys

R. H. Yu, S. Basu, Y. F. Li, Y. Zhang, G. C. Hadjipanayis, B. E. Lorenz, John Q. Xiao

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Keywords: magnetization, Coercivity, microstructure, ordering parameter, grain size, second phase, precipitation, soft magnetic materials, aging, FeCo alloy

JOURNAL OPEN ACCESS

1999 Volume 23 Issue 1_2 Pages 397-399

DOI https://doi.org/10.3379/jmsjmag.23.397

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Abstract

We have systematically investigated the effect of microstructure on the magnetic properties of Fe_balCo₄₉V_1.9, Fe_balCo₄₉V_1.9Nb_0.3, Fe_balCo₂₇Cr_0.6Ni_0.6, Fe_balCo₂₇Cr_0.6Ni_0.6C_0.3alloys in a temperature range of 20-700 °C. The effects of microstructure, the grain size, second phase precipitation, density of dislocation, and structural ordering parameter have been separated each other and been determined. The second phase precipitation which appears in high temperature aged samples causes the magnetic properties to deteriorate significantly. The increase of the structural ordering parameter, which was determined by neutron diffraction, improves the magnetic properties. The grain size mainly affects the coercivity field.

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