Anisotropic hydrogenation–decomposition–desorption–recombination (HDDR)-treated powders were prepared from strip cast (SC) Nd 10.1Pr 2.9Fe 74.6Co 5.8B 6.2Zr 0.1Ga 0.3 alloy flakes. The alloy flakes were annealed at various temperatures before the HDDR treatment. B r and ( BH) max of the powder are increased as the annealing temperature increases from 1000 to 1160 °C, which can be ascribed to growth of the original Nd 2Fe 14B grains. The powder obtained from the optimally annealed alloy flakes, exhibits B r of 1.46 T, H cJ of 1210 kA/m, and ( BH) max of 388 kJ/m 3, which are superior to those of the powder prepared using the conventional book-mold cast (BMC) ingots. This would be related to the complete elimination of α-Fe phase in the strip cast flakes.