Recently alloys based on titanium aluminides (TiAl) have attracted substantial attention for their potential aerospace applications in high temperature propulsion, structural and thermal protection systems. TiAl alloys have low density, high temperature strength, modulus retention, creep, and oxidation resistance. They are being actively investigated for use in turbine and compressor blades and divergent flaps in nozzles of high-speed gas turbine engines. These alloys have been considered as potential replacements for nickel-based steel/superalloys. Replacing nickel-based superalloys with TiAl in gas turbine engines can increase the thrust to weight ratio by as much as factor of 2. But, low ductility and low fracture toughness remains a concern with TiAl. This research aims at enhancing the mechanical properties of the rapidly consolidated TiAl parts by 1) microstructure refinement, 2) grain size reduction and 3) alloy additions. The microstructure refinement was achieved by consolidating TiAl powders in different phase fields of Ti-Al binary system. This led to formation of four different characteristic microstructures (gamma, duplex, nearly lamellar and fully lamellar) in the consolidated samples. Of these, the duplex microstructure was found to exhibit the best set of mechanical properties. The mechanical properties of the duplex microstructure were further improved by grain size refinement. The as-received powders of TiAl procured from several vendors were ball-milled in order to reduce the powder particle size by 50%. Hence, the consolidation of powders resulted in grain size reduction which in turn increased the strength of the consolidated material. Finally, small amounts of niobium and chromium were alloyed with TiAl powders. The alloyed powders were consolidated and the resultant material exhibited improved ductility and fracture toughness.