Study on the mechanism of γ' phase rafting in a 4th generation nickel-based single crystal superalloy during thermal exposure at high temperatures
文献类型：期刊论文
| 作者 | Liu, Pengcheng1,2; Zhang, Zhen3; Liu, Xingang1; Gao, Yuting1,2; Hao, Linghui1,2; Li, Hui1; Lou, Langhong1 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
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| 出版日期 | 2024-04-15 |
| 卷号 | 980页码:8 |
| 关键词 | gamma' phase rafting Thermal exposure Finite element analysis Dislocation Nickel-based single crystal Superalloy |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2024.173594 |
| 通讯作者 | Liu, Xingang(liuxingang@imr.ac.cn) |
| 英文摘要 | Non-directional rafting of gamma' phases in high generation nickel-based single crystal superalloys happens when the alloys are thermally exposed at high temperatures, but so far the reason remains unclear. The microstructures and internal stress fields of a 4th generation single crystal superalloy during thermal exposure at 1100( degrees)C and 950(degrees)C are investigated using transmission electron microscopy and finite element analysis. It is found that the non-directional rafting of gamma' phases occurs after 1100 C-degrees/200 h and 950 C-degrees/500 h thermal exposures. The gamma' phases are mainly rodlike shape in the space after thermal exposures and a small quantity of gamma' rafts exist as well. The elastic strain energy gradient in gamma matrix caused by the inhomogeneity of matrix channel width in the alloy is most likely the driving force for the non-directional rafting. Additionally, dislocations are observed only after the thermal exposure process at 1100 C-degrees. The effect of dislocations on non-directional rafting during thermal exposure is discussed in detail in the paper. |
| 资助项目 | Science Center for Gas Turbine Project[P2021 -AB -IV -001-002] ; National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology Harbin[JCKYS2022603C008] ; National Key Research and Development Program of China[2021YFB3702900] ; Advanced Material Systems and Database for Gas Turbine[J2019 -VI -0009-0123] ; Liaoning Province Science and Technology Plan[2022JH2/101300226] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001173875500001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Science Center for Gas Turbine Project ; National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology Harbin ; National Key Research and Development Program of China ; Advanced Material Systems and Database for Gas Turbine ; Liaoning Province Science and Technology Plan |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Xingang |
| 作者单位 | 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, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Inst Adv Technol, Hefei 230031, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Pengcheng,Zhang, Zhen,Liu, Xingang,et al. Study on the mechanism of γ' phase rafting in a 4th generation nickel-based single crystal superalloy during thermal exposure at high temperatures[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,980:8. |
| APA | Liu, Pengcheng.,Zhang, Zhen.,Liu, Xingang.,Gao, Yuting.,Hao, Linghui.,...&Lou, Langhong.(2024).Study on the mechanism of γ' phase rafting in a 4th generation nickel-based single crystal superalloy during thermal exposure at high temperatures.JOURNAL OF ALLOYS AND COMPOUNDS,980,8. |
| MLA | Liu, Pengcheng,et al."Study on the mechanism of γ' phase rafting in a 4th generation nickel-based single crystal superalloy during thermal exposure at high temperatures".JOURNAL OF ALLOYS AND COMPOUNDS 980(2024):8. |
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来源：金属研究所
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