New method of hot rolling for fabricating anisotropic Pr-Fe-B-based magnets

Mukai, T.; Sakamoto, H.
April 1989
Applied Physics Letters;4/17/1989, Vol. 54 Issue 16, p1597
Academic Journal
A unique method of hot rolling is described which fabricates high performance plate-shaped magnets from a cast Pr17Fe76.5B5Cu1.5 alloy. A flat ingot of the alloy with fine-scale columnar grains of a Pr2Fe14B phase is prepared by chill casting. The ingot is hot rolled in such a way that the roll pressure is applied perpendicular to the preferential growth direction of the columnar grains. A maximum energy product of 25.3 MG Oe has been obtained by this method.


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