IMR OpenIR
Dissolution of gamma' Phase in a Single Crystal Superalloy After High-cycle Fatigue
Liu Yuan1,2; Wang Linning1,3; Yu Jinjiang1; Sun Xiaofeng1
Corresponding AuthorWang Linning(lnwang00@163.com)
2020-09-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume49Issue:9Pages:2925-2929
AbstractHigh-cycle fatigue (HCF) tests at different temperatures were performed on a single crystal superalloy SRR99 with [001] orientation. The results demonstrate that conditional fatigue strength increases first and then decreases with the increase of temperature, exhibiting the same tendency with tensile strength at elevated temperatures. The microstructures were observed by SEM and TEM and it is found that the morphology of gamma' particles changes significantly and dissolution of gamma' particles takes place during cyclic loading. This may be induced by the back and forth movement of interface dislocations during the cyclic loading. As a result, the strengthening effect of the coherent gamma/gamma coherent interfaces is gradually deteriorated during high-cycle fatigue deformation. In addition, the fatigue crack propagation is found to be primarily along a specific crystalline plane, which is identified as (111). The specific mechanism for the microstructure evolution during cyclic loading was discussed based on SEM and TEM observations.
Keyworddissolution precipitation high-cycle fatigue single crystal superalloy
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000576197200003
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140902
Collection中国科学院金属研究所
Corresponding AuthorWang Linning
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Civil Aviat Univ China, Tianjin 300300, Peoples R China
3.Tianjin Univ Technol & Educ, Tianjin 300222, Peoples R China
Recommended Citation
GB/T 7714
Liu Yuan,Wang Linning,Yu Jinjiang,et al. Dissolution of gamma' Phase in a Single Crystal Superalloy After High-cycle Fatigue[J]. RARE METAL MATERIALS AND ENGINEERING,2020,49(9):2925-2929.
APA Liu Yuan,Wang Linning,Yu Jinjiang,&Sun Xiaofeng.(2020).Dissolution of gamma' Phase in a Single Crystal Superalloy After High-cycle Fatigue.RARE METAL MATERIALS AND ENGINEERING,49(9),2925-2929.
MLA Liu Yuan,et al."Dissolution of gamma' Phase in a Single Crystal Superalloy After High-cycle Fatigue".RARE METAL MATERIALS AND ENGINEERING 49.9(2020):2925-2929.
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