Phase formation in annealed mechanical alloyed NdFe V Ti, and magnetic properties of the consequent phases and their 10.51+x1.5 (1-x)Tix nitrides were investigated by using X-ray diffraction and magnetic measurement. From the X-ray diffraction patterns we have constructed a phase formation diagram as a function of Ti content x and annealing temperature. The demarcation curve between 1:7 and 1:12 phases moves to higher annealing temperatures with increasing Ti content. In the NdFe Ti alloy the ThMn structure is obtained by annealing 11:12 the as-milled powder at temperatures above 950℃. The nitrides NdFe V Ti N retain the same structure as their parent 10.5+0.5xV1.5 (1+x) compounds. The nitride with high V content is more stable than that with low V content. Upon nitrogenation, the Curie temperature is enhanced from 150℃ to 180℃. In NdFe V Ti N T the values fall in the range 450～480℃. The hard magnetic properties 10.5+0.5xV1.5 (1-x)TixNy magnets have been assessed.