This project aims to investigate the texture evolution mechanism of Ti-6Al-4V during hot rolling. The materials provided by TIMET were rolled in the lab at nine different temperatures in α+β temperature window and three different strains, followed by sampling from two directions and texture characterization using Electron Backscatter Diffraction (EBSD). The results were fairly consistent with previous work: the transverse component is dominant after deformation, the ND component appears stronger at relatively low temperatures, and the RD component appears with β fraction higher than 50%. However, the texture strength in Ti64 was found to be lower than in hot rolled Zr-2.5Nb for the same phase fraction during deformation, which could be attributed to the different starting microstructures. The effects of starting microstructure on texture evolution are still under investigation.

Due to the limitation of indexing the very fine β phase using EBSD, the β phase texture was reconstructed from the secondary α phase. In order to establish a database of hot rolling texture, synchrotron x-ray diffraction will be used to directly measure the macrotexture of α and β phases and compare with the results from EBSD.