Effect of Aging Temperature on Microstructure of Ti-6Al-2Mo-1.5Cr-2Sn-2Zr-1V-0.4Fe-0.15Si Alloy
The effects of aging temperature on microstructure of Ti-6Al-2Mo-1.5Cr-2Sn-2Zr-1V-0.4Fe-0.15Si alloy were investigated by metallographic microscope,XRD and TEM methods.The results show that the aging temperature has little effect on the morphology of α phase,while the α stabilizer element Al has an opposite change pattern with the typical β stabilizer elements Mo and Cr;the lattice parameter of β phase increases with the increase of aging temperature;the secondary α coarsens slightly,but the volume fraction of the secondary α remains stable.The orientation relationship between the secondary α and β phase accords with the classical relationship.