| DOI | Trouver le DOI : https://doi.org/10.1016/j.msea.2014.07.093 |
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| Auteur | Rechercher : Chamanfar, A.; Rechercher : Jahazi, M.; Rechercher : Gholipour, J.1; Rechercher : Wanjara, P.1; Rechercher : Yue, S. |
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| Affiliation | - Conseil national de recherches du Canada. Aérospatiale
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| Format | Texte, Article |
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| Sujet | Waspaloy; Isothermal hot compressions; Friction; Adiabatic heating; Flow stress; Microstructure |
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| Résumé | The evolution of the flow stress and microstructure for Waspaloy was studied in the 950-1140°C temperature range under constant true strain rate conditions of 0.001-1s-1 up to a true strain of 0.83 using isothermal hot compression testing. The impact of friction at the sample/anvil interface and adiabatic heating during deformation on the flow stress evolution was also examined. Mathematical models relating the flow stress to the deformation temperature and strain rate were derived using a power-law relationship. The strain rate sensitivity and the activation energy for hot deformation of Waspaloy were found to be considerably different for deformation in the subsolvus and supersolvus temperature ranges. According to the microstructural investigations, at 950°C dynamic recovery (DRV) was the main softening mechanism. By contrast, dynamic recrystallization (DRX), partial or complete, occurred at temperatures above 950°C and resulted in flow softening. |
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| Date de publication | 2014-07-31 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21272934 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 817e8aa5-ae1b-4d22-b189-c3e4ceca0f91 |
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| Enregistrement créé | 2014-12-03 |
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| Enregistrement modifié | 2020-04-22 |
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