Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C

Revealing the initial oxidation behavior of single crystal superalloys is significant for a better understanding of the oxidation mechanism of turbine blades during service condition. The purpose of current research was to observe the initial oxidation of a single crystal superalloy. In-situ oxidati...

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Autores principales: Ma, Jinyao, Jiang, Wenxiang, Wang, Jin, Zhang, Yuefei, Zhang, Ze
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7033221/
https://www.ncbi.nlm.nih.gov/pubmed/32080288
http://dx.doi.org/10.1038/s41598-020-59968-3
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author Ma, Jinyao
Jiang, Wenxiang
Wang, Jin
Zhang, Yuefei
Zhang, Ze
author_facet Ma, Jinyao
Jiang, Wenxiang
Wang, Jin
Zhang, Yuefei
Zhang, Ze
author_sort Ma, Jinyao
collection PubMed
description Revealing the initial oxidation behavior of single crystal superalloys is significant for a better understanding of the oxidation mechanism of turbine blades during service condition. The purpose of current research was to observe the initial oxidation of a single crystal superalloy. In-situ oxidation experiment during only thermal exposure and thermal-stress pattern were carried out. The mechanism of nucleation and growth of oxide scale was discussed. Results showed that the oxide on the interface of γ/γ′ phase was constituted of Al(2)O(3) precipitates and formed by external diffusion of Al atoms or ions. Loading stress enhanced the diffusion of Al atom causing high oxidation rate. A logarithmic model was proposed and fitted well with the oxidation process.
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spelling pubmed-70332212020-02-28 Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C Ma, Jinyao Jiang, Wenxiang Wang, Jin Zhang, Yuefei Zhang, Ze Sci Rep Article Revealing the initial oxidation behavior of single crystal superalloys is significant for a better understanding of the oxidation mechanism of turbine blades during service condition. The purpose of current research was to observe the initial oxidation of a single crystal superalloy. In-situ oxidation experiment during only thermal exposure and thermal-stress pattern were carried out. The mechanism of nucleation and growth of oxide scale was discussed. Results showed that the oxide on the interface of γ/γ′ phase was constituted of Al(2)O(3) precipitates and formed by external diffusion of Al atoms or ions. Loading stress enhanced the diffusion of Al atom causing high oxidation rate. A logarithmic model was proposed and fitted well with the oxidation process. Nature Publishing Group UK 2020-02-20 /pmc/articles/PMC7033221/ /pubmed/32080288 http://dx.doi.org/10.1038/s41598-020-59968-3 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Ma, Jinyao
Jiang, Wenxiang
Wang, Jin
Zhang, Yuefei
Zhang, Ze
Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C
title Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C
title_full Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C
title_fullStr Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C
title_full_unstemmed Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C
title_short Initial oxidation behavior of a single crystal superalloy during stress at 1150 °C
title_sort initial oxidation behavior of a single crystal superalloy during stress at 1150 °c
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7033221/
https://www.ncbi.nlm.nih.gov/pubmed/32080288
http://dx.doi.org/10.1038/s41598-020-59968-3
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AT zhangyuefei initialoxidationbehaviorofasinglecrystalsuperalloyduringstressat1150c
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