Analysis of strain-induced precipitates by delta-processing in Inconel 718 superalloy
| Autor: | Marco Antonio Zamora-Antuñano, Pedro Jacinto Páramo-Kañetas, Martha Patricia Guerrero-Mata, Jose Maria Cabrera-Marrero, Utkudeniz Ozturk, Jessica Calvo |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat Erasmus Mundus en Ciència i Enginyeria de Materials Avançats, Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials, Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Precipitation (chemistry) Inconel 718 Mechanical Engineering Metallurgy Recrystallization (metallurgy) Inconel -- Microstructura 02 engineering and technology Deformation (meteorology) 021001 nanoscience & nanotechnology Condensed Matter Physics Enginyeria dels materials [Àrees temàtiques de la UPC] 01 natural sciences Superalloy Grain growth Delta-processing Mechanics of Materials Mo and Cr carbides 0103 physical sciences Dynamic recrystallization Hardening (metallurgy) General Materials Science 0210 nano-technology Inconel |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | Delta-Processing (DP) is a suitable heat treatment process aiming at controlling grain growth during hot deformation of the well-known Ni-base superalloy Inconel 718 (IN718). DP is often applied by heating up to 900 °C for 24 h in order to promote d-phase saturation prior to deformation. In addition to the d-phase, Mo and Cr-rich carbides in the form of M23C6 may also precipitate during the subsequent hot deformation of this alloy in the range of 950–1000 °C These carbides are induced by deformation and can affect the static and dynamic recrystallization of the matrix. The objective of the current work is to understand the precipitation of M23C6 carbides when the material has been saturated with d-phase precipitation, as well as their interaction with recrystallization phenomena. For this purpose, a series of double-strain hot compression test (double-hit) were carried out. Several holding times were applied between the first and the second hit in order to derive the softening/hardening fraction progress with time. Microstructural characterization of the samples was performed through Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) in order to identify the precipitating/dissolving phases under each testing condition.Delta-Processing (DP) is a suitable heat treatment process aiming at controlling grain growth during hot deformation of the well-known Ni-base superalloy Inconel 718 (IN718). DP is often applied by heating up to 900 °C for 24 h in order to promote d-phase saturation prior to deformation. In addition to the d-phase, Mo and Cr-rich carbides in the form of M23C6 may also precipitate during the subsequent hot deformation of this alloy in the range of 950–1000 °C These carbides are induced by deformation and can affect the static and dynamic recrystallization of the matrix. The objective of the current work is to understand the precipitation of M23C6 carbides when the material has been saturated with d-phase precipitation, as well as their interaction with recrystallization phenomena. For this purpose, a series of double-strain hot compression test (double-hit) were carried out. Several holding times were applied between the first and the second hit in order to derive the softening/hardening fraction progress with time. Microstructural characterization of the samples was performed through Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) in order to identify the precipitating/dissolving phases under each testing condition. |
| Databáze: | OpenAIRE |
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