Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test
This paper proposes a novel vibration fatigue testing methodology of thin-walled specimens in the very high cycle fatigue (VHCF) regime, with the lifetime up to 109 cycles. A series of novel thin-walled specimens for the single crystal superalloy DD6 are designed, considering the thickness range fro...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542402252X |
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| _version_ | 1846107788114132992 |
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| author | Wei Xu Beichen Zhu Xin Chen Yue Zhang Yuhuai He |
| author_facet | Wei Xu Beichen Zhu Xin Chen Yue Zhang Yuhuai He |
| author_sort | Wei Xu |
| collection | DOAJ |
| description | This paper proposes a novel vibration fatigue testing methodology of thin-walled specimens in the very high cycle fatigue (VHCF) regime, with the lifetime up to 109 cycles. A series of novel thin-walled specimens for the single crystal superalloy DD6 are designed, considering the thickness range from 0.5 to 1.5 mm. And the influences of the wall thickness on the S–N relations are obtained at RT and 760 °C, respectively. Subsequently, the thickness debit effect of the superalloy in terms of VHCF is presented and the relevant mechanism is discussed finally. The results show the proposed fatigue testing methodology is feasible and efficient for the thin-walled specimens. It is revealed the thickness debit effect of the superalloy at 760 °C, which shows the fatigue strengths of the 0.5 mm specimens are remarkably lower than those of other thicker specimens, especially in the VHCF regime. The thickness debit effect is mainly attributed to the fatigue crack initiation assisted by oxide penetration. |
| format | Article |
| id | doaj-art-7b4329b12eab4fb0b6bc93a7dc7feacf |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-7b4329b12eab4fb0b6bc93a7dc7feacf2024-12-26T08:54:12ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013325382548Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue testWei Xu0Beichen Zhu1Xin Chen2Yue Zhang3Yuhuai He4Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, AECC Key Laboratory of Science Technology on Aeronautical Materials Testing and Evaluation, Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing, 100095, China; Corresponding author.Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, AECC Key Laboratory of Science Technology on Aeronautical Materials Testing and Evaluation, Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing, 100095, China; Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, ChinaBeijing Key Laboratory of Aeronautical Materials Testing and Evaluation, AECC Key Laboratory of Science Technology on Aeronautical Materials Testing and Evaluation, Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing, 100095, ChinaBeijing Key Laboratory of Aeronautical Materials Testing and Evaluation, AECC Key Laboratory of Science Technology on Aeronautical Materials Testing and Evaluation, Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing, 100095, ChinaBeijing Key Laboratory of Aeronautical Materials Testing and Evaluation, AECC Key Laboratory of Science Technology on Aeronautical Materials Testing and Evaluation, Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing, 100095, ChinaThis paper proposes a novel vibration fatigue testing methodology of thin-walled specimens in the very high cycle fatigue (VHCF) regime, with the lifetime up to 109 cycles. A series of novel thin-walled specimens for the single crystal superalloy DD6 are designed, considering the thickness range from 0.5 to 1.5 mm. And the influences of the wall thickness on the S–N relations are obtained at RT and 760 °C, respectively. Subsequently, the thickness debit effect of the superalloy in terms of VHCF is presented and the relevant mechanism is discussed finally. The results show the proposed fatigue testing methodology is feasible and efficient for the thin-walled specimens. It is revealed the thickness debit effect of the superalloy at 760 °C, which shows the fatigue strengths of the 0.5 mm specimens are remarkably lower than those of other thicker specimens, especially in the VHCF regime. The thickness debit effect is mainly attributed to the fatigue crack initiation assisted by oxide penetration.http://www.sciencedirect.com/science/article/pii/S223878542402252XThickness debit effectVibration fatigueVery high cycle fatigueNickel-based single crystal superalloy |
| spellingShingle | Wei Xu Beichen Zhu Xin Chen Yue Zhang Yuhuai He Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test Journal of Materials Research and Technology Thickness debit effect Vibration fatigue Very high cycle fatigue Nickel-based single crystal superalloy |
| title | Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test |
| title_full | Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test |
| title_fullStr | Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test |
| title_full_unstemmed | Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test |
| title_short | Thickness debit effect of Ni-based single crystal superalloy thin-walled specimens in the VHCF regime based on a vibration fatigue test |
| title_sort | thickness debit effect of ni based single crystal superalloy thin walled specimens in the vhcf regime based on a vibration fatigue test |
| topic | Thickness debit effect Vibration fatigue Very high cycle fatigue Nickel-based single crystal superalloy |
| url | http://www.sciencedirect.com/science/article/pii/S223878542402252X |
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