| DOI | Trouver le DOI : https://doi.org/10.1016/j.intermet.2011.05.027 |
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| Auteur | Rechercher : Kim, D.J.1; Rechercher : Seo, D.Y.1; Rechercher : Saari, H.; Rechercher : Sawatzky, T.; Rechercher : Kim, Y.-W. |
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| Affiliation | - Conseil national de recherches du Canada. Aérospatiale
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| Format | Texte, Article |
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| Sujet | Aero-engine components; B. Oxidation; C. Powder metallurgy; D. Microstructure; Titanium aluminides; Alloys; Aluminum; Cerium alloys; Molybdenum; Niobium; Oxidation; Powder metallurgy; Reaction intermediates; Titanium; Titanium alloys; Titanium compounds; Titanium dioxide; Tungsten; Molybdenum alloys |
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| Résumé | A new TiAl-2Nb-2Mo beta gamma alloy was synthesized by powder metallurgy process. HIP'ed and vacuum heat treated specimens were isothermally oxidized at 800 °C and 900 °C in air up to 500 h. The TiAl-2Nb-2Mo alloy oxidized parabolically up to 500 h at both 800 °C and 900 °C. The oxides consisted of outer TiO2 layer, intermediate Al2O 3 layer, and inner TiO2 rich mixed layer and the oxidation mechanisms of the alloy were identical at both temperatures. During oxidation, the degradation of lamellar colonies formed a diffusion zone just below the oxide/substrate interface consisting of γ-TiAl matrix and dispersed beta phases which contained high concentration of Nb and Mo. The oxidation rate of the TiAl-2Nb-2Mo alloy is more sensitive to temperature than those of the Ti-48Al-2Nb-2Cr and Ti-48Al-2Nb-2Cr-W alloys. © 2011 Elsevier Ltd. All rights reserved. |
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| Date de publication | 2011 |
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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 | 21271589 |
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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 | 31767dd9-1474-43fe-8601-8359d334609d |
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| Enregistrement créé | 2014-03-24 |
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| Enregistrement modifié | 2020-04-21 |
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