High temperature oxidation of Ti–46Al–6Nb–0.5W–0.5Cr–0.3Si–0.1C alloy

DOI	Trouver le DOI : https://doi.org/10.1016/j.intermet.2016.04.005
Auteur	Rechercher : Park, Soon Yong; Rechercher : Seo, D. Y.¹; Rechercher : Kim, Seong Woong; Rechercher : Kim, Seung Eon; Rechercher : Hong, Jae Keun; Rechercher : Lee, Dong Bok
Affiliation	Conseil national de recherches Canada. Aérospatiale
Format	Texte, Article
Sujet	Intermetallics (aluminides); Oxidation; Casting; Microstructure; Microscopy; Aerospace structures
Résumé	A newly developed Ti–46Al–6Nb-0.5W-0.5Cr-0.3Si-0.1C alloy was oxidized isothermally and cyclically in air, and its high-temperature oxidation behavior was investigated. When the alloy was isothermally oxidized at 700 °C for 2000 h, the weight gain was only 0.15 mg/cm². The parabolic rate constant, kp (mg²/cm⁴·h), measured from isothermal oxidation tests was 0.002 at 900 °C and 0.009 at 1000 °C. Such excellent isothermal oxidation resistance resulted from the formation of the dense, continuous Al₂O₃ layer between the outer TiO₂ layer and the inner (TiO₂-rich, Al₂O₃-deficient) layer. The alloy also displayed good cyclic oxidation resistance at 900 °C. Some noticeable scale spallation began to occur after 68 h at 1000 °C during the cyclic oxidation test.
Date de publication	2016-04-23
Maison d’édition	Elsevier
Dans	Intermetallics 74 : 8–14.
Langue	anglais
Publications évaluées par des pairs	Oui
Identificateur	S0966979516301182
Numéro NPARC	23000322
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	b39f6a9b-8ec4-40ad-86e2-bb1c6c7f3f67
Enregistrement créé	2016-07-07
Enregistrement modifié	2020-03-16

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Date de modification :: 2026-10-10