Optimization of B2/β Forging Process for Ti-22Al-25Nb Alloy Disk

The forming process of B2/β forging of Ti-22Al-25Nb alloy disc forgings with complex section was analyzed by finite element simulation.It was found that the forming processing with simple disk as preformed blank was unreasonable, the strain of the disc after die forging was apparently uneven:the strain of the connection between the eel barrel and the spoke plate was too large, and the strain at the end of the ferret barrel was too small, which may cause uneven organization.The preforming blank was optimized by simulation, and the strain uniformity of the entire forging was significantly improved after the optimization of the die forging process.After adopting the optimized forging process, the microstructure of the Ti-22Al-25Nb alloy disk forging is lamellar structure, and the microstructural uniformity is good for varying position.