Effect of Overheating on the Tensile Properties of Nickel-Based Superalloy GH4720Li.
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| Title: | Effect of Overheating on the Tensile Properties of Nickel-Based Superalloy GH4720Li. |
|---|---|
| Authors: | Wang, Anqi1 (AUTHOR) wang161028@hnu.edu.cn, Liu, Zhicheng1 (AUTHOR) zcliu@hnu.edu.cn, Cui, Ruoyao1 (AUTHOR) xgwang@hnu.edu.cn, Wu, Yangyang2 (AUTHOR) wuyangyang1005@sina.cn, Zhang, Di2 (AUTHOR) zhangdi0524@sina.cn, Wang, Xiaogang1 (AUTHOR) |
| Source: | Materials (1996-1944). May2024, Vol. 17 Issue 10, p2351. 15p. |
| Subjects: | Heat resistant alloys, Tensile strength, Tensile tests, Crystal grain boundaries, Nickel alloys, Embrittlement |
| Abstract: | Aero-engines can be exposed to One Engine Inoperative (OEI) conditions during service, and the resulting overheating effect may significantly impact their structural integrity and flight safety. This paper focuses on the influence of overheating on the microstructural evolution and tensile properties of the GH4720Li alloy, a nickel-based polycrystalline superalloy commonly used in turbine disks. Based on the typical OEI operating conditions of a real aero-engine, a series of non-isothermal high-temperature tensile tests involving an OEI stage of 800 °C were conducted. The effects of OEI-induced overheating on the microstructure and tensile properties of the GH4720Li alloy were investigated. The results showed that, after OEI treatment, the primary γ′ phase in this alloy was partially dissolved. The GH4720Li superalloy also exhibited numerous microcracks at the grain boundaries, resulting in complex effects on its tensile properties. The alloy's yield strength and ultimate tensile strength were slightly decreased, whereas its ductility decreased considerably. The OEI-induced embrittlement phenomenon was mainly caused by the non-uniform distribution of the tertiary γ′ phase within grains. The formation of microcracks nucleated at the interfaces between the primary γ′ precipitates and γ matrix phase was another key factor. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 177489587 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effect of Overheating on the Tensile Properties of Nickel-Based Superalloy GH4720Li. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Anqi%22">Wang, Anqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wang161028@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Zhicheng%22">Liu, Zhicheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zcliu@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Cui%2C+Ruoyao%22">Cui, Ruoyao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xgwang@hnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Yangyang%22">Wu, Yangyang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wuyangyang1005@sina.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Di%22">Zhang, Di</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> zhangdi0524@sina.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Xiaogang%22">Wang, Xiaogang</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. May2024, Vol. 17 Issue 10, p2351. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Heat+resistant+alloys%22">Heat resistant alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+tests%22">Tensile tests</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+grain+boundaries%22">Crystal grain boundaries</searchLink><br /><searchLink fieldCode="DE" term="%22Nickel+alloys%22">Nickel alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Embrittlement%22">Embrittlement</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Aero-engines can be exposed to One Engine Inoperative (OEI) conditions during service, and the resulting overheating effect may significantly impact their structural integrity and flight safety. This paper focuses on the influence of overheating on the microstructural evolution and tensile properties of the GH4720Li alloy, a nickel-based polycrystalline superalloy commonly used in turbine disks. Based on the typical OEI operating conditions of a real aero-engine, a series of non-isothermal high-temperature tensile tests involving an OEI stage of 800 °C were conducted. The effects of OEI-induced overheating on the microstructure and tensile properties of the GH4720Li alloy were investigated. The results showed that, after OEI treatment, the primary γ′ phase in this alloy was partially dissolved. The GH4720Li superalloy also exhibited numerous microcracks at the grain boundaries, resulting in complex effects on its tensile properties. The alloy's yield strength and ultimate tensile strength were slightly decreased, whereas its ductility decreased considerably. The OEI-induced embrittlement phenomenon was mainly caused by the non-uniform distribution of the tertiary γ′ phase within grains. The formation of microcracks nucleated at the interfaces between the primary γ′ precipitates and γ matrix phase was another key factor. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/ma17102351 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 2351 Subjects: – SubjectFull: Heat resistant alloys Type: general – SubjectFull: Tensile strength Type: general – SubjectFull: Tensile tests Type: general – SubjectFull: Crystal grain boundaries Type: general – SubjectFull: Nickel alloys Type: general – SubjectFull: Embrittlement Type: general Titles: – TitleFull: Effect of Overheating on the Tensile Properties of Nickel-Based Superalloy GH4720Li. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Anqi – PersonEntity: Name: NameFull: Liu, Zhicheng – PersonEntity: Name: NameFull: Cui, Ruoyao – PersonEntity: Name: NameFull: Wu, Yangyang – PersonEntity: Name: NameFull: Zhang, Di – PersonEntity: Name: NameFull: Wang, Xiaogang IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 05 Text: May2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 17 – Type: issue Value: 10 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
