Microstructures of ingot and sintered Nd31Dy3Fe62.57Nb0.6Co1.2Cu0.3Al0.3B1.03 alloy with multi-element alloying were investigated

especially the distribution of micro-alloying elements in microstructure. There exists obvious radial segregation in the ingot

and dendritic α-Fe phase was found in the center of the ingots. Nb was distributed in the interface of Nd2Fe14B phase as Nb-Fe phase. Cu and Co element have obvious enrichment in the Nd-enriched phase

however

obvious enrichment of Al element in ingot was absent. There are similar regularities for elemental distribution in sintered magnets

however

the degree of elemental enrichment is slightly decreased

in which the grain boundary becomes more straightness after tempering treatment. The magnetic properties of sintered magnets were Br of 1.097T

Hcj of 1 092 kA/m

（BH）max of 220 kj/m3.