The Ti2AlNb intermetallic compound alloy (referred to as Ti2AlNb base alloy) based on the ordered 0 phase has been highly anticipated as a substitute for nickel-based superalloys due to its high strength and plasticity, excellent creep resistance, and low density. It has become one of the most promising lightweight high-temperature structural materials for aerospace applications. It has broad application prospects in fields such as advanced fighter jets, large aircraft, and high thrust-to-weight ratio aerospace engines. In the United States' fourth-generation fighter jet F-35, titanium alloy structural components account for up to 41%. This project targets the development trend of lightweight, high-performance, and integrated structure and function in key high-temperature structural parts in the aerospace, automotive, and shipbuilding fields. By adopting multi-directional isothermal forging and precision clad rolling technology for strong plastic deformation, bulk ultrafine-grained materials and large-size fine-grained plates of Ti2AlNb base alloy are obtained. Combining superplastic forming technology, high-performance typical high-temperature structural components such as control surfaces, turbine disks, gas turbine blades, rotors, and other typical special structural parts have been prepared. This promotes the process of Ti2AlNb-based alloy utilization. The core technology of material preparation in this project is based on an authorized patent technology developed by the research team: 'A thermal processing method for refining grains of Ti2AlNb-based alloy' (Patent No.: ZL201110135507.4). This preparation route is independent intellectual property of the research team.