Simulation of the die-upsetting process of hot-deformed magnets
In: Journal of the Korean Physical Society, Jg. 63 (2013-08-01), Heft 3, S. 320-324
Online
serialPeriodical
Zugriff:
A plastic deformation simulation was performed using a three-dimensional finite-element method based deformation modeling software in order to clearly understand the die-upsetting process in detail. The simulation indicates that effective strains are different for different regions in the die-upsetting process because of a limitation of the dies. Effective strains of Nd-Fe-B die-upset magnets have a parabolic reduction from the middles to the ends of the magnetic specimens along the c-axis. Experimentally, anisotropic Nd-Fe-B magnets were prepared from commercial melt-spun powders (MQU-F) by hot pressing and subsequent die upsetting. The magnetic properties, the Xray diffraction patterns and the microstructures of die-upset magnet specimens of different heights were studied. The magnetic properties increased with the effective strains of the die-upset magnets. Experimental research confirmed that the microstructural characterics of die-upset magnets is due to the inhomogeneity of the die-upsetting process.
Titel: |
Simulation of the die-upsetting process of hot-deformed magnets
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Autor/in / Beteiligte Person: | Lai, Bin ; Wang, Huijie ; Zhu, Minggang ; Li, Wei |
Link: | |
Zeitschrift: | Journal of the Korean Physical Society, Jg. 63 (2013-08-01), Heft 3, S. 320-324 |
Veröffentlichung: | 2013 |
Medientyp: | serialPeriodical |
ISSN: | 0374-4884 (print) ; 1976-8524 (print) |
DOI: | 10.3938/jkps.63.320 |
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