Effects of solidification conditions on volume fractions of eutectic phase after solidification at different locations in the ingot of Al-4.5%Cu alloy were studied by microsegregation forming simulation. The main kinetic factors effecting microsegregation were accounted for in the modeling such as secondary arm coarsening, solid state back diffusion, primary tip undercooling and variable diffusion coefficients according to temperature. Deforming grids technology was applied for tracking the moving interfac...