Abstract：Ti and HAl77 powder were fully mixed and then subjected to discharge plasma sintering treatment and
hot extrusion. The changes of phase structure and microstructure distribution caused by Ti addition in aluminum
brass under different solid-phase sintering processes were analyzed, and the interface microstructure and mechanical
strength of samples were tested.The results show that there are two kinds of microstructure phases in HAl77 matrix
without adding titanium. After the addition of Ti element, a number of dispersed second- phase grains are
formed in the HAl77 matrix. When the Ti content gradually increases, the second-phase particles obtained also continue
to increase, showing an irregular shape structure, the mechanical properties of the alloy samples change linearly,
the mechanical properties of aluminum brass were improved. In addition, the number of microcracks decreases,
forming more dimples and presenting uniform distribution at the fracture site. Under the action of external
force, the dislocation will make Ti and Cu2Ti4O particles interact, hinder the deformation of the matrix, and significantly
improve the alloy strength.
2022, Vol. 32 
