Effect of silver addition in gamma titanium aluminide

The influence of sliver on the oxidation resistance and relative fracture toughness of aluminum rich gamma titanium aluminide was studied. The titanium aluminide buttons were prepared in argon protected environment. The samples were tested and characterized with the help of Vickers hardness testing machine, optical and scanning electron microscope and energy dispersive spectrometer. The relative fracture toughness was determined by indentation method. It was observed that for a certain alloying addition the oxidation resistance and the relative fracture toughness can be improved.