High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat Treatment
LPBF is an additive manufacturing technique that allows the building of complex geometries. Its process parameters directly influence the microstructure of the material. Inconel 718 is a nickel-based superalloy with excellent mechanical properties and oxidation resistance at elevated temperatures. H...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2025-07-01
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| Series: | Materials Research |
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| author | Rodrigo de Oliveira França Robson Bruno Dutra Pereira José David Pérez-Ruiz Gaizka Gómez Escudero Amaia Calleja Ochoa Luis Norberto López de Lacalle Artur Mariano de Sousa Malafaia |
| author_facet | Rodrigo de Oliveira França Robson Bruno Dutra Pereira José David Pérez-Ruiz Gaizka Gómez Escudero Amaia Calleja Ochoa Luis Norberto López de Lacalle Artur Mariano de Sousa Malafaia |
| author_sort | Rodrigo de Oliveira França |
| collection | DOAJ |
| description | LPBF is an additive manufacturing technique that allows the building of complex geometries. Its process parameters directly influence the microstructure of the material. Inconel 718 is a nickel-based superalloy with excellent mechanical properties and oxidation resistance at elevated temperatures. However, when built by AM, its anisotropic microstructural character can influence the oxidation resistance, impairing the mechanical integrity. This work investigates the effects of high temperature exposure on the LPBF IN718. Samples manufactured with two different scanning strategies and with and without age-hardening heat treatment were prepared in three different orientations: X, Y and Z, and subjected to oxidation tests at 1000 °C for 24 h in order to measure the mass variation and characterize their surfaces. Conventional forged samples were used for comparison. ANOVA, OM, SEM-EDS and XRD analyses showed a strong influence of both parameters on the oxidation of all faces. The samples produced using 0° angle had better performance compared to 67°, with less mass gain. Heat treatment promoted grain recrystallization, improving the resistance to oxidation in some cases. Faces X and Y presented similar mass gains at 0°, with better performance for non-treated samples. Face Z showed the lowest mass gain, with better performance for treated samples. |
| format | Article |
| id | doaj-art-8960d047554b4a92a8eb38f05ebf7fa5 |
| institution | DOAJ |
| issn | 1516-1439 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj-art-8960d047554b4a92a8eb38f05ebf7fa52025-08-20T03:08:32ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392025-07-0128suppl 110.1590/1980-5373-mr-2025-0273High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat TreatmentRodrigo de Oliveira Françahttps://orcid.org/0009-0000-3425-7988Robson Bruno Dutra Pereirahttps://orcid.org/0000-0001-9080-8393José David Pérez-Ruizhttps://orcid.org/0000-0002-5189-1857Gaizka Gómez Escuderohttps://orcid.org/0000-0003-0446-0680Amaia Calleja Ochoahttps://orcid.org/0000-0002-4978-3443Luis Norberto López de Lacallehttps://orcid.org/0000-0002-1573-2787Artur Mariano de Sousa Malafaiahttps://orcid.org/0000-0001-9296-9406LPBF is an additive manufacturing technique that allows the building of complex geometries. Its process parameters directly influence the microstructure of the material. Inconel 718 is a nickel-based superalloy with excellent mechanical properties and oxidation resistance at elevated temperatures. However, when built by AM, its anisotropic microstructural character can influence the oxidation resistance, impairing the mechanical integrity. This work investigates the effects of high temperature exposure on the LPBF IN718. Samples manufactured with two different scanning strategies and with and without age-hardening heat treatment were prepared in three different orientations: X, Y and Z, and subjected to oxidation tests at 1000 °C for 24 h in order to measure the mass variation and characterize their surfaces. Conventional forged samples were used for comparison. ANOVA, OM, SEM-EDS and XRD analyses showed a strong influence of both parameters on the oxidation of all faces. The samples produced using 0° angle had better performance compared to 67°, with less mass gain. Heat treatment promoted grain recrystallization, improving the resistance to oxidation in some cases. Faces X and Y presented similar mass gains at 0°, with better performance for non-treated samples. Face Z showed the lowest mass gain, with better performance for treated samples.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392025000200260&lng=en&tlng=enAdditive manufacturinghigh temperatures oxidationInconel 718LPBF |
| spellingShingle | Rodrigo de Oliveira França Robson Bruno Dutra Pereira José David Pérez-Ruiz Gaizka Gómez Escudero Amaia Calleja Ochoa Luis Norberto López de Lacalle Artur Mariano de Sousa Malafaia High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat Treatment Materials Research Additive manufacturing high temperatures oxidation Inconel 718 LPBF |
| title | High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat Treatment |
| title_full | High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat Treatment |
| title_fullStr | High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat Treatment |
| title_full_unstemmed | High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat Treatment |
| title_short | High Temperatures Oxidation of Inconel 718 Superalloy Produced by Additive Manufacturing: Influence of Scanning Direction Strategy, Microstructure and Heat Treatment |
| title_sort | high temperatures oxidation of inconel 718 superalloy produced by additive manufacturing influence of scanning direction strategy microstructure and heat treatment |
| topic | Additive manufacturing high temperatures oxidation Inconel 718 LPBF |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392025000200260&lng=en&tlng=en |
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