| Dissolution of gamma' Phase in a Single Crystal Superalloy After High-cycle Fatigue | |
| Liu Yuan1,2; Wang Linning1,3; Yu Jinjiang1; Sun Xiaofeng1 | |
| Corresponding Author | Wang Linning(lnwang00@163.com) |
| 2020-09-01 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 49Issue:9Pages:2925-2929 |
| Abstract | High-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. |
| Keyword | dissolution precipitation high-cycle fatigue single crystal superalloy |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000576197200003 |
| Publisher | NORTHWEST INST NONFERROUS METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/140902 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang Linning |
| Affiliation | 1.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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