Machining and heat treatment as post-processing strategies for Ni-superalloys structures fabricated using direct energy deposition

Article dans une revue avec comité de lecture
Auteur
CARERI, Francesco
103704 Università della Calabria [Arcavacata di Rende, Italia] = University of Calabria [Italy] = Université de Calabre [Italie] [UniCal]
421435 University of Birmingham [Birmingham]
496320 Dipartimento di Ingegneria Meccanica, Energetica e Gestionale [DIMEG]
IMBROGNO, Stano
421435 University of Birmingham [Birmingham]
UMBRELLO, Domenico
103704 Università della Calabria [Arcavacata di Rende, Italia] = University of Calabria [Italy] = Université de Calabre [Italie] [UniCal]
496320 Dipartimento di Ingegneria Meccanica, Energetica e Gestionale [DIMEG]
ATTALLAH, Moataz M.
421435 University of Birmingham [Birmingham]
MARTINS DO OUTEIRO, Jose Carlos
127742 Laboratoire Bourguignon des Matériaux et Procédés [LABOMAP]
BATISTA, António C.

URI
http://hdl.handle.net/10985/20278
DOI
10.1016/j.jmapro.2020.11.024
Date
2021
Journal
Journal of Manufacturing Processes

Résumé

The aim of this study is to determine the most suitable post-processing routines to enhance the surface integrity of components produced with Inconel 718 superalloy by additive manufacturing. The components were fabri­cated by Direct Energy Deposition (DED) followed by two typical post-processing methods: machining and heat treatment. The effect of the post-processing sequence (machining + heat treatment or heat treat­ment + machining) and the corresponding effects on the surface integrity of these components were investigated in terms of surface finishing, microstructure, micro-hardness and residual stresses. Finally, suitable solutions in terms of additive manufacturing - post-process operations have been reported.

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