One object of the present invention is to provide a rare earth magnet alloy ingot,
which has improved magnetic properties. In order to achieve the object, the present
invention provides a rare earth magnet alloy ingot, wherein the rare earth magnet
alloy ingot comprises an R-T-B type magnet alloy (R represents at least one element
selected from among rare earth elements, including Y; and T represents a substance
predominantly comprising Fe, with a portion of Fe atoms being optionally substituted
by Co, Ni, Cu, Al, Ga, Cr, and Mn.) containing at least one element selected from
among Nd, Pr, and Dy in a total amount of 11.8 to 16.5% by atom and B in an amount
of 5.6 to 9.1% by atom; and wherein as determined in an as-cast state of the alloy
ingot, R-rich phase that measures 100 m or more is substantially absent
on a cross section.