MICROSTRUCTURAL EVOLUTION DURING THERMOMECHANICAL PROCESSING OF Ti-6246 TITANIUM ALLOY

A Ti-6Al-2Sn-4Zr-6Mo (wt. %) alloy has extensively used in the aerospace applications due to its high mechanical properties. The present paper aimed at examining the changes in the microstructure of Ti-6246 titanium alloy during thermomechanical processes (TMPs). The alloy was subjected to a combination of TMPs comprising in the following stages: hot plastic deformation in the α + β field and normalizing heat treatment in the β field. The results showed that the effects generated by TMPs have a strong influence on the microstructural characteristics. All the samples were exhibiting various microstructural morphologies in different orientations. The microstructures features were highly improved by the normalizing heat process as compared to the initial material and the processed material by hot plastic deformation.