Mechanical properties and microstructure of a FeCrAl-ODS alloy under long-term thermal aging at 700 °C up to 10000 h
文献类型：期刊论文
| 作者 | Li, Xinle1,2; Zhang, Jiarong1; Li, Yaozhi1,2; Wang, Qitao1,2; Li, Yanfen1,2 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
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| 出版日期 | 2025-04-05 |
| 卷号 | 1021页码:14 |
| 关键词 | FeCrAl-ODS alloy Thermal stability Microstructural evolution Aging Nanoparticles |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2025.179627 |
| 通讯作者 | Li, Yanfen(yfli@imr.ac.cn) |
| 英文摘要 | Long-term aging effects were studied on the FeCrAl-ODS alloy at 700 degrees C up to 10,000 h to reveal changes in mechanical properties and microstructures. The microstructure of the alloy before aging consists of fine and elongated grains, and high density of dislocations and nanoparticles. The nanoparticles have an average diameter of approximately 9 nm and a number density of 1.3 x 1023 m-3, identified as orthorhombic YAlO3 and Y2(Zr0.6Ti0.4)2O7 coherent with matrix. After aging at 700 degrees C to 10,000 h, the reduction of hardness and tensile properties at both room temperature and 700 degrees C were negligible. The total elongation tested at 700 degrees C was about 49 %, which was significantly higher than most of the ODS alloys in the literature and very beneficial for the fabrication of cladding tubes. The fracture modes of the tensile specimens remain unchanged by aging. No noticeable recovery of grain/sub-grain structures or dislocations occurs during aging. The uniform distribution, average size, number density and coherence with the matrix of nanoparticles remain almost unchanged by aging. The FeCrAl-ODS alloy exhibits superior thermal aging stability in terms of the microstructure and mechanical properties during long-term thermal aging treatment at 700 degrees C, which is promising for application in advanced nuclear energy systems. |
| 资助项目 | LingChuang Research Project of China National Nuclear Corporation ; National Nature Science Foun-dation of China[52371126] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001444368500001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | LingChuang Research Project of China National Nuclear Corporation ; National Nature Science Foun-dation of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Yanfen |
| 作者单位 | 1.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xinle,Zhang, Jiarong,Li, Yaozhi,et al. Mechanical properties and microstructure of a FeCrAl-ODS alloy under long-term thermal aging at 700 °C up to 10000 h[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2025,1021:14. |
| APA | Li, Xinle,Zhang, Jiarong,Li, Yaozhi,Wang, Qitao,&Li, Yanfen.(2025).Mechanical properties and microstructure of a FeCrAl-ODS alloy under long-term thermal aging at 700 °C up to 10000 h.JOURNAL OF ALLOYS AND COMPOUNDS,1021,14. |
| MLA | Li, Xinle,et al."Mechanical properties and microstructure of a FeCrAl-ODS alloy under long-term thermal aging at 700 °C up to 10000 h".JOURNAL OF ALLOYS AND COMPOUNDS 1021(2025):14. |
入库方式： OAI收割
来源：金属研究所
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