In order to obtain the evolution of mesoscopic grains during solidification process

simulations were performed for the nucleation and growth of grains using cellular automaton

where the temperature field model is from InteCAST

and the frame shape castings were produced to validate the model.The results show the a higher cooling rate will cause the high grain density

and the distribution of grain size can meet basically the normal distribution.The simulated result is well in agreement with the experimental ones.