HEAVY RARE EARTH ALLOY, NEODYMIUM-IRON-BORON PERMANENT MAGNET MATERIAL, RAW MATERIAL, AND PREPARA

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Disclosed in the present invention are a heavy rare earth alloy, a neodymium-iron-boron permanent magnet material, a raw material, and a preparation method. The heavy rare earth alloy comprises the following components : RH : 30-100 mas%, not including 100 mas%; X, 0-20 mas%, not including 0; B : 0-1.1 mas%; and Fe and/or Co : 15-69 mas%, RH comprising one or more heavy rare earth elements in Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Sc, and X being Ti and/or Zr. When the heavy rare earth alloy of the present invention is used as a sub-alloy to prepare the neodymium-iron-boron permanent magnet material, a high utilization rate of heavy rare earth is achieved, so that the coercivity can also be greatly improved while the neodymium-iron-boron permanent magnet material maintains high remanence.