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, FrancescoIMBROGNO, StanoUMBRELLO, DomenicoATTALLAH, Moataz M. 
MARTINS DO OUTEIRO, Jose CarlosBATISTA, António C.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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Article dans une revue avec comité de lecture; ; ;MARTINS DO OUTEIRO, Jose Carlos (Taylor & Francis, 2015)
Efforts on numerical modeling and simulation of metal cutting operations continue to increase due to the growing need for predicting the machining performance. A significant number of numer- ical methods, especially the ...
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Article dans une revue avec comité de lecture; ;MARTINS DO OUTEIRO, Jose Carlos; ; ; ; (American Society of Mechanical Engineers, 2020)
White layer (WL) formation in metal cutting is generally found to have negative effects on the corrosion and fatigue life of machined components. Nowadays, the mechanism of the WL formation has not been understood very ...
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Article dans une revue avec comité de lecture; ; ; ; ; ;MARTINS DO OUTEIRO, Jose Carlos (Elsevier, 2013)
Residual strains induced by drilling of glass-fibre reinforced polymers (GFRP) were determined using a hybrid experimental-numerical methodology. Experimentally, a set of GFRP specimens were drilled under well-defined ...
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