Abstract
This work is motivated by the fact that friction has a significant impact on the microstructures of titanium forged parts, further influencing their mechanical properties. In this paper, a 3D FE model is developed to investigate the phase transformation characteristics of Ti-6Al-4V turbine blade in the hot forging process. Then, the effect of friction conditions on temperature and phase transformations within the forged blade are analyzed numerically and verified by experiments. The results reveal that compared with a less influence on lamellar α+β phase, a good lubricated condition obviously increases the average volume fraction of α phase, while decreases the average values of temperature and β phase volume fraction as well as the distribution uniformities of α and β phases.
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