In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °C
An in-situ fatigue testing device, equipped in scanning electron microscope (SEM) and designed for long-time high temperature and complex stress testing conditions, was developed. The fatigue crack initiation and propagation behavior of notched Nickel-based single crystal superalloy (Ni-SX) was stud...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425013195 |
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| author | Yongfeng Wang Wenqiang Zhang Jutian Chen Shuang Chen Junxia Lu Yuefei Zhang Ze Zhang |
| author_facet | Yongfeng Wang Wenqiang Zhang Jutian Chen Shuang Chen Junxia Lu Yuefei Zhang Ze Zhang |
| author_sort | Yongfeng Wang |
| collection | DOAJ |
| description | An in-situ fatigue testing device, equipped in scanning electron microscope (SEM) and designed for long-time high temperature and complex stress testing conditions, was developed. The fatigue crack initiation and propagation behavior of notched Nickel-based single crystal superalloy (Ni-SX) was studied using the fatigue device combined with optimized speckle preparation. The mechanisms of crack initiation and propagation were analyzed using digital image correlation (DIC) and crystal plasticity finite element (CPFE) analysis. The results showed that fatigue crack initially formed at the notch root and propagated in mode II under the influence of the local stress distribution. As the stress field changed with fatigue, the crack propagation transitioned into a mixed mode. The micro in-situ high-temperature fatigue device and methodology are essential for studying low-cycle fatigue and local stress distribution in superalloys, especially under high-temperature conditions. |
| format | Article |
| id | doaj-art-e89a48681e554e799aa1adc3eb088501 |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-e89a48681e554e799aa1adc3eb0885012025-08-20T03:05:42ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01369761977210.1016/j.jmrt.2025.05.163In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °CYongfeng Wang0Wenqiang Zhang1Jutian Chen2Shuang Chen3Junxia Lu4Yuefei Zhang5Ze Zhang6College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, ChinaSchool of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, ChinaCollege of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, ChinaSchool of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, ChinaCollege of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China; Corresponding author.School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China; Corresponding author.School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, ChinaAn in-situ fatigue testing device, equipped in scanning electron microscope (SEM) and designed for long-time high temperature and complex stress testing conditions, was developed. The fatigue crack initiation and propagation behavior of notched Nickel-based single crystal superalloy (Ni-SX) was studied using the fatigue device combined with optimized speckle preparation. The mechanisms of crack initiation and propagation were analyzed using digital image correlation (DIC) and crystal plasticity finite element (CPFE) analysis. The results showed that fatigue crack initially formed at the notch root and propagated in mode II under the influence of the local stress distribution. As the stress field changed with fatigue, the crack propagation transitioned into a mixed mode. The micro in-situ high-temperature fatigue device and methodology are essential for studying low-cycle fatigue and local stress distribution in superalloys, especially under high-temperature conditions.http://www.sciencedirect.com/science/article/pii/S2238785425013195In-situ low-cycle fatigueHigh temperatureSuperalloyCrack propagationLocal stress distribution |
| spellingShingle | Yongfeng Wang Wenqiang Zhang Jutian Chen Shuang Chen Junxia Lu Yuefei Zhang Ze Zhang In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °C Journal of Materials Research and Technology In-situ low-cycle fatigue High temperature Superalloy Crack propagation Local stress distribution |
| title | In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °C |
| title_full | In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °C |
| title_fullStr | In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °C |
| title_full_unstemmed | In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °C |
| title_short | In-situ study the low-cycle fatigue deformation behavior of a fourth-generation nickel-based single crystal superalloy at 1100 °C |
| title_sort | in situ study the low cycle fatigue deformation behavior of a fourth generation nickel based single crystal superalloy at 1100 °c |
| topic | In-situ low-cycle fatigue High temperature Superalloy Crack propagation Local stress distribution |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425013195 |
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