Titanium aluminides are one of the most widely used intermetallic compounds that have been used extensively in automotive and aerospace industries due to its low density and corrosion resistance at high temperatures. The main method for producing these compounds is divided into two types of solid state and molten state. The most important problem of these methods is the fuzzy separation and the slowness of penetration, and therefore the lack of a homogeneous and single-phase structure. Therefore, the main purpose of this study is to combine the two methods in a method of simultaneous mechanical and thermal activation for the production of titanium aluminides, especially TiAl, the mechanism of its formation, and also a method for accelerating the penetration process in these compounds. For this purpose, three separate methods of hot pelletization, spark plug plasma processing () and combustion synthesis (SHS) and were used. In this study, aluminum and pure titanium powders were mixed with a stoichiometric ratio of TiAl, and heated to 800 ° C for 12 and 18 hours. In the second method, the two-step process was performed so that in the first step, the sample was placed at 780 ° C and pressurized MPa 5 for 10 minutes, then in the second step, the pressure was increased to 40 MPa and the sample at 900, 1000 and 1050 ° C was held for 10 to 30 minutes. In the third method, after performing the SHS process, the sample was powdered and placed at a pressure of 40 MPa at 1000, 1100, and 1150 ° C for 10 minutes under a process. XRD and SEM tests were used to investigate the fuzzy and microstructure of products. EDS analysis was also performed to determine the chemical composition of different sites in the microstructure of the sample. The results of the investigations on the products produced in all three methods showed that, as a result of the reaction between solid and melt aluminum titanium, the TiAl3 phase was formed as the first reaction product. Then, due to the penetration of Al from TiAl3 to Ti, the Ti3Al composition was formed in the Ti / TiAl3 common interface. In the process, the TiAl2 phase was formed in the TiAl3 / Ti3Al interface, and the TiAl compound was finally synthesized in the TiAl2 / Ti3Al interface. In fact, the influence of aluminum atoms, from Al-rich regions to poorer regions, is the most important mechanism for controlling the formation of the TiAl interphalonic composition.