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Formation of ultrafine gradient structure in hard magnetic alloy Fe-30%Cr-8%Co
|Alexander Korznikov 1, Zbigniew Pakiela 2, Galia Korznikova , Krzysztof J. Kurzydlowski 2
1. Institute for Metals Superplsticity Problems, Russian Academy of Sciences, Ufa, Russian Federation
The alloys of Fe-Cr-Co system belong to the group of hard magnetic materials of dispersion-hardening class. Low cobalt alloys alongside with economy of expensive cobalt offer a number of advantages. The most important of those is an open single α phase area. This feature allows the method of strain ageing to be applied for obtaining high coercivity state. It permits anisotropic permanent magnets to be produced by means of conventional metallurgical techniques including: quenching for fixing metastable α solid solution, preliminary ageing for decomposition of the solid solution into spherical α1 precipitations and α2 matrix, intermediate uniaxial deformation for elongation and orientation of α1 precipitations, giving rise to magnetic anisotropy, final thermal treatment.
Presentation: poster at E-MRS Fall Meeting 2005, Symposium I, by Alexander Korznikov
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-03-24 08:08 Revised: 2009-06-07 00:44