About this Abstract |
| Meeting |
11th International Symposium on Superalloy 718 and Derivatives 2026: Legacy, Innovations, and Future Directions
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| Symposium
|
Superalloy 718 and Derivatives 2026: Legacy, Innovations, and Future Directions
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| Presentation Title |
Effect of Repair Operations on the Microstructure Properties of DED-LB/w Produced Alloy 718 |
| Author(s) |
Fabian Hanning, Mattias Igestrand, Satyapal Mahade, Joel Andersson |
| On-Site Speaker (Planned) |
Fabian Hanning |
| Abstract Scope |
The use of additive manufacturing processes enables the production of parts with tailored geometries, enabling for example the addition of substructures to large components. This can provide significant savings in material usage reduce lead times for production, which makes AM processes interesting for the aerospace industry. Aerospace components are often subject to maintenance, repair and overhaul procedures to increase usable lifetime, and hence remanufacturing and repair capabilities are an important consideration for the applicability of materials and production processes. Additive manufacturing creates complex microstructures with properties different to materials produced via traditional manufacturing routes. It is not yet well understood how additively manufactured material responds to repair operations with local material removal and subsequent re-deposition. This study investigates the effect of localised repair operations on the microstructural properties of an Alloy 718 component manufactured via laser directed energy deposition with wire as feedstock material (DED-LB/w). Focus is laid on how thermal cycles during repair affect the parent materials microstructure and hardness properties, as well as the uniformity of material properties on the overall component after post-repair heat treatments. Repair operations have been carried out using both laser directed energy deposition with powder (DED-LB/p) and manual tungsten inert gas welding. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |