Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy Deposition
Nickel-based Ni-Cr-Si-B self-fluxing alloys are excellent candidates to replace cobalt-based alloys in aeronautical components. In this work, metal additive manufacturing by directed energy deposition using a laser beam (DED-LB, also known as LMD) and gas-atomized powders as a material feedstock is...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Journal of Manufacturing and Materials Processing |
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| Online Access: | https://www.mdpi.com/2504-4494/7/3/110 |
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| author | Juan Carlos Pereira Mari Carmen Taboada Andrea Niklas Emilio Rayón Jerome Rocchi |
| author_facet | Juan Carlos Pereira Mari Carmen Taboada Andrea Niklas Emilio Rayón Jerome Rocchi |
| author_sort | Juan Carlos Pereira |
| collection | DOAJ |
| description | Nickel-based Ni-Cr-Si-B self-fluxing alloys are excellent candidates to replace cobalt-based alloys in aeronautical components. In this work, metal additive manufacturing by directed energy deposition using a laser beam (DED-LB, also known as LMD) and gas-atomized powders as a material feedstock is presented as a potential manufacturing route for the complex processing of these alloys. This research deals with the advanced material characterization of these alloys obtained by LMD and the study and understanding of their solidification paths and strengthening mechanisms. The as-built microstructure, the Vickers hardness at room temperature and at high temperatures, the nanoindentation hardness and elastic modulus of the main phases and precipitates, and the strengthening mechanisms were studied in bulk cylinders manufactured under different chemical composition grades and DED-LB/p process parameter sets (slow, normal, and fast deposition speeds), with the aim of determining the influence of the chemical composition in commercial Ni-Cr-Si-Fe-B alloys. The hardening of Ni-Cr-Si-Fe-B alloys obtained by LMD is a combination of the solid solution hardening of gamma nickel dendrites and eutectics and the contribution of the precipitation hardening of small chromium-rich carbides and hard borides evenly distributed in the as-built microstructure. |
| first_indexed | 2024-03-11T02:17:09Z |
| format | Article |
| id | doaj.art-36e613731e2b4ae397d1b09d5ac8de75 |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-11T02:17:09Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-36e613731e2b4ae397d1b09d5ac8de752023-11-18T11:05:39ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942023-06-017311010.3390/jmmp7030110Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy DepositionJuan Carlos Pereira0Mari Carmen Taboada1Andrea Niklas2Emilio Rayón3Jerome Rocchi4LORTEK Technological Centre, Basque Research and Technology Alliance BRTA, Arranomendia Kalea 4A, 20240 Ordizia, Gipuzkoa, SpainLORTEK Technological Centre, Basque Research and Technology Alliance BRTA, Arranomendia Kalea 4A, 20240 Ordizia, Gipuzkoa, SpainFundación AZTERLAN Metallurgical Research Centre, Basque Research and Technology Alliance BRTA, Aliendalde Auzunea 6, 48200 Durango, Bizkaia, SpainInstituto de Tecnología de Materiales (ITM), Universitat Politècnica de València, Cami de Vera s/n, 46022 Valencia, Valencia, SpainLiebherr Aerospace Toulouse SAS, 408, Avenue des Etats-Unis, BP 52010, CEDEX 2, 31016 Toulouse, FranceNickel-based Ni-Cr-Si-B self-fluxing alloys are excellent candidates to replace cobalt-based alloys in aeronautical components. In this work, metal additive manufacturing by directed energy deposition using a laser beam (DED-LB, also known as LMD) and gas-atomized powders as a material feedstock is presented as a potential manufacturing route for the complex processing of these alloys. This research deals with the advanced material characterization of these alloys obtained by LMD and the study and understanding of their solidification paths and strengthening mechanisms. The as-built microstructure, the Vickers hardness at room temperature and at high temperatures, the nanoindentation hardness and elastic modulus of the main phases and precipitates, and the strengthening mechanisms were studied in bulk cylinders manufactured under different chemical composition grades and DED-LB/p process parameter sets (slow, normal, and fast deposition speeds), with the aim of determining the influence of the chemical composition in commercial Ni-Cr-Si-Fe-B alloys. The hardening of Ni-Cr-Si-Fe-B alloys obtained by LMD is a combination of the solid solution hardening of gamma nickel dendrites and eutectics and the contribution of the precipitation hardening of small chromium-rich carbides and hard borides evenly distributed in the as-built microstructure.https://www.mdpi.com/2504-4494/7/3/110strengthening mechanismsadditive manufacturingdirected energy depositionlaser metal depositionself-fluxing alloysNi-Cr-Si-Fe-B |
| spellingShingle | Juan Carlos Pereira Mari Carmen Taboada Andrea Niklas Emilio Rayón Jerome Rocchi Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy Deposition Journal of Manufacturing and Materials Processing strengthening mechanisms additive manufacturing directed energy deposition laser metal deposition self-fluxing alloys Ni-Cr-Si-Fe-B |
| title | Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy Deposition |
| title_full | Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy Deposition |
| title_fullStr | Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy Deposition |
| title_full_unstemmed | Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy Deposition |
| title_short | Influence of the Chemical Composition on the Solidification Path, Strengthening Mechanisms and Hardness of Ni-Cr-Si-Fe-B Self-Fluxing Alloys Obtained by Laser-Directed Energy Deposition |
| title_sort | influence of the chemical composition on the solidification path strengthening mechanisms and hardness of ni cr si fe b self fluxing alloys obtained by laser directed energy deposition |
| topic | strengthening mechanisms additive manufacturing directed energy deposition laser metal deposition self-fluxing alloys Ni-Cr-Si-Fe-B |
| url | https://www.mdpi.com/2504-4494/7/3/110 |
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