Reclamation of intermetallic titanium aluminide aero-engine components using directed energy deposition technology

Titanium Aluminide (TiAl) alloys are intermetallics that offer low density, high melting point, good oxidation and corrosion resistance compared to Ni-based superalloys. As a result, these used in aero-engine parts such as turbine blades, fuel injectors, radial diffusers, divergent flaps, more. During operation, components subjected thermal loading an oxidizing corrosive environment, which results wear other material damage. Replacement of the entire component may not be desirable due long lead time expense. In cases, repair refurbishing best option for reclamation TiAl parts. Unfortunately, approved technology is currently available based components. Additive Manufacturing (AM) Directed Energy Deposition (DED) serve help restore expensive this work, review efforts utilize DED technique damaged TiAl-based aerospace locally conducted. Replacing part advisable it expensive. promising produce, repair, rework, overhaul (MRO) Considering high-quality standard aircraft industry, repaired certified their future use very important. However, there no standards certification reported. Case studies reveal under consideration Hybrid comprising machining, finishing capability single machine attractive implementation strategy improve efficacies. The shows investigations into development applications DED-based repairing techniques limited, suggests further much needed.