Characterization of strain-induced precipitation in Inconel 718 superalloy
© 2016 ASM International Inconel 718 presents excellent mechanical properties at high temperatures, as well as good corrosion resistance and weldability. These properties, oriented to satisfy the design requirements of gas turbine components, depend on microstructural features such as grain size and...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/91312 |
| Acceso en línea: | https://hdl.handle.net/2117/91312 https://dx.doi.org/10.1007/s11665-016-2154-9 |
| Access Level: | acceso abierto |
| Palabra clave: | Heat resistant alloys Inconel Nickel alloys dilatometry hot deformation nickel-based superalloys precipitation stress relaxation test Aliatges resistents a la calor Materials a altes temperatures Níquel -- Aliatges Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | © 2016 ASM International Inconel 718 presents excellent mechanical properties at high temperatures, as well as good corrosion resistance and weldability. These properties, oriented to satisfy the design requirements of gas turbine components, depend on microstructural features such as grain size and precipitation. In this work, precipitation-temperature-time diagrams have been derived based on a stress relaxation technique and the characterization of precipitates by scanning electron microscopy. By using this methodology, the effect of strain accumulation during processing on the precipitation kinetics can be determined. The results show that the characteristics of precipitation are significantly modified when plastic deformation is applied, and the kinetics are slightly affected by the amount of total plastic deformation. |
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