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

Francesco Careri, Stano Imbrogno*, Domenico Umbrello, Moataz M. Attallah, José Outeiro, António C. Batista

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
93 Downloads (Pure)

Abstract

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.

Original languageEnglish
Pages (from-to)236-244
Number of pages9
JournalJournal of Manufacturing Processes
Volume61
Early online date2 Dec 2020
DOIs
Publication statusPublished - Jan 2021

Bibliographical note

Funding Information:
The authors would like to acknowledge the European research project that funded this research. The project belongs to Horizon 2020 research and innovation programme Novel ALL-IN-ONE machines, robots and systems for affordable, worldwide and lifetime Distributed 3D hybrid manufacturing and repair operations (Project ID: 723795).

Keywords

  • Additive manufacturing
  • Machining
  • Surface integrity

ASJC Scopus subject areas

  • Strategy and Management
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering

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