A novel approach to the production of NiCrAlY bond coat onto IN625 superalloy by selective laser melting
| Autor: | Jiwon Lee, Hyun-Uk Hong, Philippe Lours, Mathieu Terner, Etienne Copin |
|---|---|
| Přispěvatelé: | Changwon National University, Institut Clément Ader (ICA), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT) |
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Materials science Additive manufacturing Biomedical Engineering 02 engineering and technology Indentation hardness Industrial and Manufacturing Engineering law.invention [SPI]Engineering Sciences [physics] 020901 industrial engineering & automation Magazine Residual stress law Powder bed fusion General Materials Science Laser power scaling Composite material Selective laser melting Engineering (miscellaneous) Superalloy Substrate (chemistry) Adhesion 021001 nanoscience & nanotechnology MCrAlY bond coat 0210 nano-technology |
| Zdroj: | Additive Manufacturing Additive Manufacturing, Elsevier, 2020, 31, pp.1-8/100998. ⟨10.1016/j.addma.2019.100998⟩ Additive Manufacturing, 2020, 31, pp.1-8/100998. ⟨10.1016/j.addma.2019.100998⟩ |
| ISSN: | 2214-8604 2214-7810 |
| Popis: | International audience; The present study investigated for the first time the feasibility of producing by Selective Laser Melting (SLM) a NiCrAlY bond coat material directly onto an IN625 substrate itself produced by SLM. A typical parameters optimization was conducted by varying laser power (P) and scanning speed (v). Single-line scanning tracks and two-layer coatings were carried out and analyzed for 15 different P/v conditions. Several criteria were defined for the selection of appropriate SLM parameters. The results showed significant remelting of the underlying substrate, which is a typical feature of SLM manufacturing. This led to the formation of an intermediate dilution zone characterized by substantial mixing between IN625 superalloy substrate and NiCrAlY bond coat suggesting excellent metallurgical bonding. Optimum processing conditions were found for P = 250 W and v = 800 mm/s. It produced a dense 242 µm thick bond coat including a 36% dilution zone. The SLMed system exhibited a smooth microhardness profile slightly increasing from 275 Hv in the bond coat to 305 Hv in the substrate. A progressive Al concentration distribution between the phases and low residual stress levels were found in the system. This suggested that SLM might be a valuable alternative manufacturing process for bond coat systems promoting excellent adhesion for high temperature applications. |
| Databáze: | OpenAIRE |
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