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The effect of stress on the magnetic alignment of hot-pressed Fe-Nd-B magnets derived by computer simulation

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4 Author(s)
Park, J.D. ; Dept. of Mech. Eng., Incheon Univ., South Korea ; Jang, T.S. ; Jeung, W.Y. ; Kwak, C.S.

The distribution of stress during hot pressing of a cast (Fe, Cu)-Nd-B magnet is simulated by simple plastic increment deformation (SPID). The calculated stress components are compression stress (σ z) and shear stress (τrz). The stress component causing the magnetic alignment during hot pressing, σ z, τrz, virtually plays no role in the magnetic alignment. Generally, σz is higher at the center of a specimen and decreases gradually along the radial direction to the periphery of a specimen during hot pressing, while τrz is negligible and uniformly distributed throughput the specimen. Random orientation and grain growth of φ are evident at the outer part of a specimen where σz is very weak

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Magnetics, IEEE Transactions on  (Volume:29 ,  Issue: 6 )