| Abstract Scope |
Metal additive forging technology proposes a new method to forming high-quality large forgings by small non-defect ingots, whose essence is solid state diffusion bonding and dynamic recrystallization under high temperature deformation. Through the continuous improvement of laboratory basic research and industry technological iterative development in the past ten years, the application of this technology to prepare large forgings in ferrous metal has become mature. Recently, metal additive forging technology has also made important breakthroughs in the preparation of large titanium alloy and superalloy forgings. Here, this work reports the development, preparation and evaluation process of large titanium alloy and superalloy forgings. The applicability of metal forming technology for titanium alloy and superalloy has been verified from the aspects of interface healing mechanism, oxide evolution and comprehensive mechanical properties evaluation. |