|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Large-scale Metallic Components
||Residual Stress, Microstructure and Characterization of Self-mated Repair of Inconel 718 Using Cold Spray Process
||Hariharan Sundaram, Prasad Raghupatruni
|On-Site Speaker (Planned)
Inconel 718 was deposited via cold spray process on to Inconel 718 base material as a possible alternative repair of the hardware after service. A detailed characterization of the thick (2 mm) coatings was carried out, for analyzing the coating porosity, residual stress, mechanical properties including bond strength and microstructure (phase stability), in the as sprayed condition. The coating relaxation behavior and thermal stability were studied, after heat treatment at the relevant temperatures. Detailed characterization of the coating behavior, inter-diffusion characteristics with the substrate, and residual stress, enabled understanding of near net repair of the part used as a possible alternative for conventional welding or other repair processes known. The overall analysis indicated the coating to be well suited for self-mated near net shape repair applications for turbo-machinery components and indicated heat treatment improvement can lead to improved mechanical properties in these systems.
||Additive Manufacturing, Surface Modification and Coatings, Characterization