| Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys | |
| Tan, Z. H.1,2; Wang, X. G.1; Cheng, Y.1; Li, Y. M.1; Yang, Y. H.1; Liu, J. L.1; Liu, J. D.1; Li, J. G.1; Zhou, Y. Z.1; Sun, X. F.1 | |
| Corresponding Author | Wang, X. G.(xgwang11b@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn) |
| 2021-09-21 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 825Pages:12 |
| Abstract | The composition design and optimization of Ru-containing fourth generation single crystal superalloys, which are currently considered as the most advanced and practical materials for manufacturing high-pressure turbine blades of aero-engines, have been in increasing and urgent demands. In this work, significant adjustments to the pivotal alloying element Co were made and the synthetic effect of Co on the microstructure as well as hightemperature creep property in Ru-containing alloys were systematically evaluated. The results illustrated that the size of gamma ' phase was inversely proportional to the Co content but the volume fraction of gamma ' precipitates stayed the same in different alloys. The TCP phases were more likely to precipitate in alloys with lower or extremely high Co addition during long-term aging, while the morphology of these particles transformed from long needlelike to short rod-like or blocky as Co content increased. It was noted that the element diffusion as well as the resultant coarsening and rafting of gamma/gamma ' structures were favorably facilitated by the increasing Co addition. The alloy with 12 wt% Co exhibited the longest stress rupture life at 1140 degrees C/137 MPa, regardless of the moderate precipitation of blocky TCP particles during creep. Moreover, the TCP phases in different alloys were analyzed to be typical mu phase but the specific element distributions varied with Co addition. Moreover, plenty of 2nd gamma ' precipitates were observed after creep rupture, while their nucleation and precipitation could be affected by the Co addition in alloys. Ultimately, the comprehensive Co-effect was discussed and the optimum Co content was determined, in order to provide further guidance in the design and development of Ru-containing single crystal superalloys. |
| Keyword | Ru-containing single crystal superalloys Co Creep property Microstructural stability Precipitates |
| Funding Organization | National Science and Technology Major Project ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences ; National Key R&D Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| DOI | 10.1016/j.msea.2021.141906 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Science and Technology Major Project[2017-VI-0002-0072] ; National Science and Technology Major Project[2017-VI-0003-0073] ; Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences[CXYJJ20-MS-03] ; National Key R&D Program of China[2017YFA0700704] ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000695929500001 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/166996 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, X. G.; Sun, X. F. |
| Affiliation | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Tan, Z. H.,Wang, X. G.,Cheng, Y.,et al. Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,825:12. |
| APA | Tan, Z. H..,Wang, X. G..,Cheng, Y..,Li, Y. M..,Yang, Y. H..,...&Sun, X. F..(2021).Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,825,12. |
| MLA | Tan, Z. H.,et al."Co content dependence on the microstructure characteristic and creep performance at elevated temperature in Ru-containing single crystal superalloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 825(2021):12. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment