Texture formation mechanism and constitutive equation for anisotropic thermorheological rare-earth permanent magnets | Zendy

Minggang Zhu | Zendy; Wei Li | Zendy

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Texture formation mechanism and constitutive equation for anisotropic thermorheological rare-earth permanent magnets

Author(s) -

Minggang Zhu,

Wei Li

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4978700

Subject(s) - nanocrystalline material , magnet , materials science , texture (cosmology) , creep , remanence , anisotropy , constitutive equation , coercivity , activation energy , condensed matter physics , deformation (meteorology) , composite material , metallurgy , thermodynamics , magnetization , chemistry , physics , optics , magnetic field , nanotechnology , finite element method , quantum mechanics , artificial intelligence , computer science , image (mathematics)

The study investigates the mechanism and constitutive equations describing oriented texture formation in anisotropic thermorheological rare-earth permanent magnets. The thermorheological process cannot be considered as creep, since the related phenomena are not suitably explained by the diffusion creep model. A mathematical model describing the relationship between the rheological deformation rate and texture orientation was established, and a theoretical expression was obtained for the orientation factor of thermorheological magnets. In addition, nanocrystalline Nd-Fe-B magnets were fabricated, with intrinsic coercivity Hcj=760.1 kA/m, remanence Br=1.469 T, and maximum energy product (BH)max=427.1 kJ/m3

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