Upset forged Nd Fe B Cu magnets

Upset forged Nd Fe B Cu magnets

Cylindrical ingots of the alloy Nd 17Fe 76.5B 5Cu 1.5 were upset forged in a crank press at an average strain rate of 0.8 s −1 at temperatures of 750, 850 and 950°C. Microstructural development and magnetic properties are treated in terms of the material flow during the semi-solid deformation of the...

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Veröffentlicht in:Journal of alloys and compounds 1995-11, Vol.230 (1), p.42-45
Hauptverfasser: Sinka, V., Kvacˇkaj, T., Assis, O.B.G., Ferrante, M.
Format: Artikel
Sprache:eng
Schlagworte:
Hot deformed magnets
Rare earth magnets
Semi-solid deformation
Upset forging
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Zusammenfassung:Cylindrical ingots of the alloy Nd 17Fe 76.5B 5Cu 1.5 were upset forged in a crank press at an average strain rate of 0.8 s −1 at temperatures of 750, 850 and 950°C. Microstructural development and magnetic properties are treated in terms of the material flow during the semi-solid deformation of the alloy as a function of the forging temperature. The results indicate increasing microstructural inhomogeneity due to the compaction flow at higher forging temperatures.
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(95)01902-2