Abstract
To control the microstructure and performance of large scale complex titanium alloy component by local loading forming, the effect of processing on microstructure in local loading forming was investigated by a through-process finite element model. It is found that the volume fraction of primary equiaxed α decreases with temperature, deformation speed and loading pass. The distribution of α fraction becomes more uniform with decreasing temperature and increasing deformation speed and loading pass. The α grain size increases with temperature and loading pass but decreases with deformation speed. The homogeneity of the grain size can be improved by increasing deformation temperature and loading pass, or decreasing loading speed.
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