The precipitation of TIN during solidification and holding at 1 400°C has been studied in an Fe-10mass % Ni alloy as a function of initial contents of Ti and N and holding time. Dendritic and nondendritic (globular cell) zones are observed under the condition of the undercooling of 5 to 35°C. The number of particles per unit area, N A , in nondendritic zone is significantly smaller than that in dendritic zone and the N A values in both zones increase with holding time. The values for mean particle diameter, đ A , remain unchanged in dendritic zone with holding time, while the đ A values decrease with holding time in nondendritic zone. In dendritic and nondendritic zones, the degree of precipitation of TiN particles increase with increasing area fraction of solid, f S , and the degree of precipitation depends on initial contents of Ti and N. The đ A value in nondendritic zone, which is independent of f S , is larger than that in dendritic zone at zero holding time for a given initial content.