Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep
文献类型：期刊论文
| 作者 | Huang, Xingwei1,2; Wang, Weizhen1; Cui, Chuanyong3; Ye, Hengqiang2; Yang, Zhiqing2,4 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2023-07-01 |
| 卷号 | 201页码:10 |
| 关键词 | Superalloy Stacking fault Microtwin Segregation Creep |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2023.112935 |
| 通讯作者 | Cui, Chuanyong(chycui@imr.ac.cn) ; Yang, Zhiqing(yangzq34@yahoo.com) |
| 英文摘要 | Interactions between different stacking faults (SFs) and microtwins (MTs) in gamma' precipitates within Ni-Co-based superalloys during creep were investigated with atomic resolution. And significant segregation of Co and Cr was detected at SF-SF, SF-MT and MT-MT intersections in gamma' precipitates within samples crept at intermediate temperatures (680-750 degrees C) under different stresses. Local concentration of gamma' formers (Al and Ti) were decreased below 10 at.% which is too low to stabilize chemically ordered gamma' phase at such intersections. Localized trans-formation from chemically ordered gamma' to disordered gamma was confirmed by atomic-resolution imaging. Quantitative analyses indicated that pipe diffusion along interfacial dislocations should play an important role in facilitating localized gamma'-to-gamma transformation. Formation of gamma nanorods/nanoplates along those intersections within gamma' pre-cipitates can impede glide of twinning dislocations and superlattice dislocations, which can consequently play a role in resisting creep deformation of the alloy. |
| 资助项目 | National Natural Science Foundation of China[51971225] ; Ministry of Science and Technology of China[2017YFA0700703] ; Ministry of Science and Technology of China[2019YFA0705304] ; Basic and Applied Basic Research Programme of Guangdong Province[2021B0301030003] ; Key Research Program of Frontier Sciences, CAS[X210141TL210] ; Ji Hua Laboratory ; [QYZDY-SSW-JSC027] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000992003700001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | National Natural Science Foundation of China ; Ministry of Science and Technology of China ; Basic and Applied Basic Research Programme of Guangdong Province ; Key Research Program of Frontier Sciences, CAS ; Ji Hua Laboratory |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177719]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Cui, Chuanyong; Yang, Zhiqing |
| 作者单位 | 1.Univ Sci & Technol China, Inst Met Res, Chinese Acad Sci, Sch Mat Sci & Engn,Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Ji Hua Lab, Foshan 528200, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Superalloy Div, Shenyang 110016, Peoples R China 4.Foshan Univ, Foshan 528231, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Xingwei,Wang, Weizhen,Cui, Chuanyong,et al. Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep[J]. MATERIALS CHARACTERIZATION,2023,201:10. |
| APA | Huang, Xingwei,Wang, Weizhen,Cui, Chuanyong,Ye, Hengqiang,&Yang, Zhiqing.(2023).Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep.MATERIALS CHARACTERIZATION,201,10. |
| MLA | Huang, Xingwei,et al."Defect interactions and formation of nanometer gamma phases within gamma' precipitates in Ni-Co-based superalloys during creep".MATERIALS CHARACTERIZATION 201(2023):10. |
入库方式： OAI收割
来源：金属研究所
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