| DOI | Trouver le DOI : https://doi.org/10.1007/s11661-010-0457-2 |
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| Auteur | Rechercher : Chamanfar, A.1; 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. Institut de recherche aérospatiale du CNRC
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| Format | Texte, Article |
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| Sujet | welding; base metal; friction welding; hardness profile; weld interface |
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| Résumé | The mechanical properties and microstructural evolution of WASPALOY joined by linear friction welding (LFW) were investigated in this study. In-situ temperature measurements using thermocouple probes indicated exposure of the weld area to a temperature of at least 1400 K (1126 °C). Based on electron backscatter diffraction (EBSD) mapping of the weldments, up to 50 pct reduction in γ grain size occurred within 0.9 mm of the weld interface as a result of dynamic recrystallization (DRX). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies revealed that progressive dissolution of γ′ precipitates took place from the base metal to the weld interface, where almost no γ′ precipitates were observed. Within 3.3 mm of the weld interface, the γ′ dissolution significantly influenced the hardness profile measured across the extended thermomechanically affected zones (TMAZs). Investigation of strain distributions during tensile testing using the optical Aramis system revealed weak bonding at the edge of the weld due to oxidation. To extrude out oxide layers into the flash, increasing the axial shortening to higher than 1.2 mm is recommended. |
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| Date de publication | 2010-11-25 |
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| Maison d’édition | Springer |
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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 | 19726588 |
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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 | dcb2727b-0107-4fd1-ab16-ba13b498eb84 |
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| Enregistrement créé | 2012-03-26 |
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| Enregistrement modifié | 2024-02-13 |
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