Isothermal short-term oxidation behavior of MAR-M246 nickel-based superalloy at 800°C and 1000°C

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorSIMaP-
Autor(es): dc.contributorAv. Paul Girod-
Autor(es): dc.contributorUniversidade Federal de Alfenas-
Autor(es): dc.contributor522 - Parque Perequê-
Autor(es): dc.contributorUniversidade Federal de Sergipe (UFS)-
Autor(es): dc.creatorBaldan, Renato-
Autor(es): dc.creatorLatu-Romain, Laurence-
Autor(es): dc.creatorWouters, Yves-
Autor(es): dc.creatorChaia, Nabil-
Autor(es): dc.creatorAlkmin, Luciano B.-
Autor(es): dc.creatorde Sousa Malafaia, Artur M.-
Data de aceite: dc.date.accessioned2025-08-21T19:50:40Z-
Data de disponibilização: dc.date.available2025-08-21T19:50:40Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2021-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/maco.202112931-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/230469-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/230469-
Descrição: dc.descriptionSuperalloys are widely employed at high temperatures for structural applications. Hence, knowledge about the oxidation of these materials is essential. However, the literature is scanty when it comes to some families of superalloys. The purpose of this study was therefore to analyze the MAR-M246 polycrystalline alloy in isothermal short-term tests at 800°C and 1000°C for up to 240 h. Thermodynamic simulations were performed to evaluate the material's phase stability as a function of temperature and to assess the expected phases in response to oxygen pressure. The oxidized samples were characterized by SEM-EDS and DRX, which revealed a tendency for scaling of oxidized material, particularly at temperatures of 1000°C. Nevertheless, protective layers of Cr2O3 and Al2O3 oxides were formed, which enabled the formation of fairly thin oxide layers, in addition to NiO and complex oxides. The region of the metallic substrate close to the oxide layer underwent aluminum depletion, causing the gamma-prime phase to disappear, as well as formation of aluminum oxides and titanium nitrides. Last, a good correlation was found between the thermodynamic simulations and the oxides that were formed.-
Descrição: dc.descriptionSão Paulo State University (UNESP) Campus of Itapeva-
Descrição: dc.descriptionUniversité Grenoble Alpes SIMaP-
Descrição: dc.descriptionCentre de Recherches d'Ugitech Ugitech Av. Paul Girod-
Descrição: dc.descriptionInstituto de Ciência e Tecnologia Universidade Federal de Alfenas-
Descrição: dc.descriptionDepartment of Metallurgy Federal Center for Technological Education Celso Suckow da Fonseca (CEFET-RJ) R. do Areal 522 - Parque Perequê-
Descrição: dc.descriptionDepartment of Mechanical and Industrial Engineering São João Del Rei Federal University (UFSJ), Minas Gerais-
Descrição: dc.descriptionSão Paulo State University (UNESP) Campus of Itapeva-
Idioma: dc.languageen-
Relação: dc.relationMaterials and Corrosion-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjecthigh temperature materials-
Palavras-chave: dc.subjectisothermal oxidation-
Palavras-chave: dc.subjectMAR-M246-
Palavras-chave: dc.subjectmicrostructure-
Palavras-chave: dc.subjectsuperalloys-
Título: dc.titleIsothermal short-term oxidation behavior of MAR-M246 nickel-based superalloy at 800°C and 1000°C-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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