Authors:
Nerea Ordas (1), Maria Florencia Schiopetto (1), Josu Lopez-Lopez (1), Iñigo Perez-Casero (1), Miren Aristizabal (1), Angela Veiga (1), Sergio Ausejo (1)
1- Ceit-BRTA and Tecnun (Universidad de Navarra), 20018, Donostia-San Sebastián, España
Abstract:
Laser-Directed Energy Deposition offers the possibility to combine traditional and additive manufacturing processes, boosting the flexibility during repairing damaged parts and manufacturing of complex-shaped components.
This work demonstrates the potential of powder L-DED as an effective tool in hybrid processes. Two use cases are presented. The first one is a mounting lug built with a Ni-base superalloy, Astroloy, on a turbine case of the same material, previously produced by PM-HIP (Hot Isostatic Press of encapsulated powder), for aero-engines. The second one refers to repairing of a railway nose crossing of a high Mn steel. Gas atomized powders are used in all cases, being the chemical composition for railway specifically designed for this application. L-DED parameters were selected to avoid defects like pores or cracks. Microstructural and mechanical characterization were performed to verify that the AM parts meet the required specifications.
DOI:
https://doi.org/10.59499/EP235782991