Semi-solid forming is a new metal forming technology between conventional die-casting and forging.With an aim to simulate thixo-forging with high solid fraction

a thermal-mechanical simulation modeling was developed.The distribution of temperature field

the highest / lowest temperature points in different forging steps and the effect of die running speed on the forming force were calculated and analyzed during thixo-forging.The calculation results showed that conventional hot-forging could also appear during thixo-forging and that the forming force was decreased with high forging speed

which could lead to negative effect of solid/liquid segregation.A comparison of the maximum forging force from experiment and that from simulation showed that the developed simulation modeling could predict the maximum forging force precisely.However

optimization of the modeling is needed owing to the that the forging force differs in the course of thixo-forging between simulation and experiment.