Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition
Feature addition to existing parts is a trending application for Directed Energy Deposition (DED) and can be used to add complex geometry features to basic forged geometries with the aim to reduce and simplify the number of processing steps as machining and assembling. However, the mechanical proper...
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/6/952 |
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| author | Pedro Ramiro Haize Galarraga Anabel Pérez-Checa Mikel Ortiz Amaia Alberdi Trunal Bhujangrao Elena Morales Eneko Ukar |
| author_facet | Pedro Ramiro Haize Galarraga Anabel Pérez-Checa Mikel Ortiz Amaia Alberdi Trunal Bhujangrao Elena Morales Eneko Ukar |
| author_sort | Pedro Ramiro |
| collection | DOAJ |
| description | Feature addition to existing parts is a trending application for Directed Energy Deposition (DED) and can be used to add complex geometry features to basic forged geometries with the aim to reduce and simplify the number of processing steps as machining and assembling. However, the mechanical properties of as-deposited Inconel 718 fabricated by Powder-fed Directed Energy Deposition (Powder-fed DED) are far lower than the relevant specifications, making it necessary to apply different heat treatment with the purpose of improving deposited material performance. In addition, the effects of heat treatments in both variable thickness deposited geometry and forge substrate have not been studied. In this study, the effect of heat treatment within the Aerospace Materials Specifications (AMS) for cast and wrought Inconel 718 on the microstructure and hardness of both the Ni-Based Alloy 718 deposited geometry and substrate are analyzed in different parts of the geometry. The microstructure of all samples (as-deposited and heat-treated) is analyzed by Scanning Electron Microscope (SEM) and Energy Dispersive Spectrometer (EDS), confirming the formation of aluminum oxides and titanium nitrides and carbonitrides in the deposited structure. |
| first_indexed | 2024-03-09T23:03:33Z |
| format | Article |
| id | doaj.art-ff1842bb2ccb44d6a0925c71a3c2d2ce |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T23:03:33Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-ff1842bb2ccb44d6a0925c71a3c2d2ce2023-11-23T17:57:49ZengMDPI AGMetals2075-47012022-05-0112695210.3390/met12060952Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy DepositionPedro Ramiro0Haize Galarraga1Anabel Pérez-Checa2Mikel Ortiz3Amaia Alberdi4Trunal Bhujangrao5Elena Morales6Eneko Ukar7TECNALIA, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2 and 7, 20009 Donostia-San Sebastian, SpainTECNALIA, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2 and 7, 20009 Donostia-San Sebastian, SpainTECNALIA, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2 and 7, 20009 Donostia-San Sebastian, SpainTECNALIA, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2 and 7, 20009 Donostia-San Sebastian, SpainTECNALIA, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2 and 7, 20009 Donostia-San Sebastian, SpainTECNALIA, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2 and 7, 20009 Donostia-San Sebastian, SpainTECNALIA, Basque Research and Technology Alliance (BRTA), Paseo Mikeletegi 2 and 7, 20009 Donostia-San Sebastian, SpainDepartment of Mechanical Engineering, Faculty of Engineering of Bilbao, University of Basque Country, Alameda de Urquijo s/n, 48013 Bilbao, SpainFeature addition to existing parts is a trending application for Directed Energy Deposition (DED) and can be used to add complex geometry features to basic forged geometries with the aim to reduce and simplify the number of processing steps as machining and assembling. However, the mechanical properties of as-deposited Inconel 718 fabricated by Powder-fed Directed Energy Deposition (Powder-fed DED) are far lower than the relevant specifications, making it necessary to apply different heat treatment with the purpose of improving deposited material performance. In addition, the effects of heat treatments in both variable thickness deposited geometry and forge substrate have not been studied. In this study, the effect of heat treatment within the Aerospace Materials Specifications (AMS) for cast and wrought Inconel 718 on the microstructure and hardness of both the Ni-Based Alloy 718 deposited geometry and substrate are analyzed in different parts of the geometry. The microstructure of all samples (as-deposited and heat-treated) is analyzed by Scanning Electron Microscope (SEM) and Energy Dispersive Spectrometer (EDS), confirming the formation of aluminum oxides and titanium nitrides and carbonitrides in the deposited structure.https://www.mdpi.com/2075-4701/12/6/952directed energy depositionpowderheat treatmentmicrostructurealloy 718additive manufacturing |
| spellingShingle | Pedro Ramiro Haize Galarraga Anabel Pérez-Checa Mikel Ortiz Amaia Alberdi Trunal Bhujangrao Elena Morales Eneko Ukar Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition Metals directed energy deposition powder heat treatment microstructure alloy 718 additive manufacturing |
| title | Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition |
| title_full | Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition |
| title_fullStr | Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition |
| title_full_unstemmed | Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition |
| title_short | Effect of Heat Treatment on the Microstructure and Hardness of Ni-Based Alloy 718 in a Variable Thickness Geometry Deposited by Powder Fed Directed Energy Deposition |
| title_sort | effect of heat treatment on the microstructure and hardness of ni based alloy 718 in a variable thickness geometry deposited by powder fed directed energy deposition |
| topic | directed energy deposition powder heat treatment microstructure alloy 718 additive manufacturing |
| url | https://www.mdpi.com/2075-4701/12/6/952 |
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