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Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy
Ge, Zhicheng1,2; Xie, Guang2; Segersall, Mikael3; Norman, Viktor3; Chen, Zhe4; Moverare, Johan3; Lou, Langhong2; Zhang, Jian2
Corresponding AuthorXie, Guang(gxie@imr.ac.cn) ; Moverare, Johan(johan.moverare@liu.se)
2022-03-01
Source PublicationINTERNATIONAL JOURNAL OF FATIGUE
ISSN0142-1123
Volume156Pages:10
AbstractThe deformation mechanisms of a single crystal nickel-base superalloy with and without Ru-doped have been investigated under out-of-phase thermomechanical fatigue. The Ru-doped alloy exhibits a thermomechanical fatigue life more than twice as high compared to the Ru-free alloy and a difference in thermomechanical fatigue behavior is also displayed. Microstructure studies by scanning electron microscopy and transmission electron microscopy revealed that the deformation mechanism of the Ru-free alloy in the initial stage is the movement of dislocations in the gamma matrix. In the later stage of the thermomechanical fatigue test, large amounts of twins are formed in the material, and a large number of stacking faults and dislocations are sheared into the gamma' precipitates. By comparing with the Ru-free alloy, the Ru-doped alloy has a higher matrix strength due to the solid solution strengthening effect of Ru, and is also prone to different deformation mechanisms. For example, the stacking faults are formed in the initial thermomechanical fatigue cycles and remain in the matrix throughout the entire thermomechanical fatigue process. The formation of twins, on the other hand, is suppressed by Ru addition. Such effects are believed to extend the thermomechanical fatigue life effectively.
KeywordNickel-base superalloy Single crystal Thermomechanical fatigue Ru Twinning
Funding OrganizationNational Natural Science Foundation of China ; National Science and Technology Major Project ; Swedish foundation for international cooperation in research and higher education (STINT)
DOI10.1016/j.ijfatigue.2021.106634
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51771204] ; National Natural Science Foundation of China[U1732131] ; National Natural Science Foundation of China[51911530154] ; National Natural Science Foundation of China[51631008] ; National Natural Science Foundation of China[91860201] ; National Science and Technology Major Project[J2019-VI-0010] ; Swedish foundation for international cooperation in research and higher education (STINT)[CH2018-7851]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
WOS IDWOS:000789656100001
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172498
Collection中国科学院金属研究所
Corresponding AuthorXie, Guang; Moverare, Johan
Affiliation1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China
3.Linkoping Univ, Dept Management & Engn, Div Engn Mat, SE-58183 Linkoping, Sweden
4.Siemens Energy AB, SE-61231 Finspang, Sweden
Recommended Citation
GB/T 7714
Ge, Zhicheng,Xie, Guang,Segersall, Mikael,et al. Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,156:10.
APA Ge, Zhicheng.,Xie, Guang.,Segersall, Mikael.,Norman, Viktor.,Chen, Zhe.,...&Zhang, Jian.(2022).Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy.INTERNATIONAL JOURNAL OF FATIGUE,156,10.
MLA Ge, Zhicheng,et al."Influence of Ru on the thermomechanical fatigue deformation behavior of a single crystal superalloy".INTERNATIONAL JOURNAL OF FATIGUE 156(2022):10.
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