Accurate control method for structure property of deformed TiAl alloy

The invention belongs to the technical field of thermal processing preparation of high-temperature structural materials, and relates to an accurate control method for the structure property of a deformed TiAl alloy. The accurate control method comprises the steps of directly heating a TiAl alloy blank to different deformation temperature, and after keeping the temperature for a certain time, carrying out thermal deformation processing; and controlling the thermal deformation temperature, so as to obtain typical near gamma, duplex, near lamellar and full lamellar TiAl alloy microscopic structures to further obtain TiAl alloy deformation parts with different mechanical properties. Through the utilization of the method, the structure and property are controlled during the thermal deformation preparation processing process, the follow-up thermal treatment cycle is eliminated, and the procedures are decreased; the prepared near lamellar and full lamellar structures are fine and uniform and integrate strength and p