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Ruttert, Benjamin und Meid, Carla und Mujica Roncery, Lais und Lopez-Galilea, Inmaculada und Bartsch, Marion und Theisen, Werner (2018) Effect of porosity and eutectics on the high-temperature low-cycle fatigue Performance of a nickel-base single-crystal superalloy. Scripta Materialia, 155, Seiten 139-143. Elsevier. doi: 10.1016/j.scriptamat.2018.06.036. ISSN 1359-6462.
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Offizielle URL: https://www.sciencedirect.com/science/article/pii/S1359646218304007?via%3Dihub
Kurzfassung
This work investigates the separate influence of porosity and γ/γ′-eutectics on the low-cycle fatigue life of a single-crystal Ni-base superalloy at high temperatures. A conventional vacuum furnace heat-treatment but also integrated heat-treatments in a hot isostatic press are applied to produce different material variants of the same alloy. High-resolution electron microscopy revealed that both pores and γ/γ′-eutectics act as crack starters, thus initiating early failure. Moreover, the results indicate that remaining γ/γ′-eutectics can weaken the fatigue resistance even more than pores. Furthermore, the results confirm the beneficial effect of proper integrated hot isostatic pressing heat-treatments on the fatigue Performance.
| elib-URL des Eintrags: | https://elib.dlr.de/123404/ | ||||||||||||||||||||||||||||
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| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
| Titel: | Effect of porosity and eutectics on the high-temperature low-cycle fatigue Performance of a nickel-base single-crystal superalloy | ||||||||||||||||||||||||||||
| Autoren: |
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| Datum: | 26 Juni 2018 | ||||||||||||||||||||||||||||
| Erschienen in: | Scripta Materialia | ||||||||||||||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
| Open Access: | Ja | ||||||||||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||||||||||
| In SCOPUS: | Ja | ||||||||||||||||||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
| Band: | 155 | ||||||||||||||||||||||||||||
| DOI: | 10.1016/j.scriptamat.2018.06.036 | ||||||||||||||||||||||||||||
| Seitenbereich: | Seiten 139-143 | ||||||||||||||||||||||||||||
| Verlag: | Elsevier | ||||||||||||||||||||||||||||
| ISSN: | 1359-6462 | ||||||||||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||||||||||
| Stichwörter: | Electron backscatter diffraction (EBSD); Hot isostatic pressing (HIP); Low-cycle fatigue; Microstructure; Single-crystal superalloy | ||||||||||||||||||||||||||||
| HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
| HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||||||
| HGF - Programmthema: | Antriebssysteme | ||||||||||||||||||||||||||||
| DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||||||
| DLR - Forschungsgebiet: | L ER - Engine Research | ||||||||||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Triebwerk und Validierungsmethoden (alt) | ||||||||||||||||||||||||||||
| Standort: | Köln-Porz | ||||||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Werkstoff-Forschung > Experimentelle und numerische Methoden | ||||||||||||||||||||||||||||
| Hinterlegt von: | Bartsch, Dr.-Ing. Marion | ||||||||||||||||||||||||||||
| Hinterlegt am: | 20 Nov 2018 09:04 | ||||||||||||||||||||||||||||
| Letzte Änderung: | 23 Jul 2022 13:45 |
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