The blade precision forging process is a forming process with high temperature and large plas- tic deformation. Interaction of deformation and heat conduction leads to large uneven distribu- tion of temperature. The unevenness of temperature distribution has a great effect on mechanical properties and the microstructure of materials. So it is necessary to consider the influence of tem- perature on the precision forging process of blades. Taking a blade with a tenon into considera- tion, a 3D mechanical model in precision forging is built up. The distribution laws of tempera- ture field and the influence of the temperature on the equivalent stress in the process are ob- tained by using 3-D coupled thermo-mechanical FEM code developed by the authors. The re- sults obtained illustrate that the influence of the temperature field on the blade forging process is considerable. The achievements of predicting microstructure and mechanical properties for forged blades is significant.
