| Microstructural stability of a 9Cr oxide dispersion strengthened alloy under thermal aging at high temperatures | |
| Wang, Jianqiang1,2,3; Liu, Sheng2,3; Xu, Bin2,3; Sun, Mingyue2,3; Liu, Xiang4; Li, Dianzhong3; Li, Yiyi2 | |
| Corresponding Author | Sun, Mingyue(mysun@imr.ac.cn) |
| 2023-01-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 932Pages:13 |
| Abstract | High temperature heat treatment is one of the critical steps in hot compression bonding (HCB), which was recently developed to scale up the fabrication of oxide dispersion strengthened (ODS) alloys. Understanding the microstructural evolution during heat treatments is required to refine the fabrication process to produce large-scale homogeneous ODS alloys. In this study, the effect of high temperature thermal aging treatments at representative temperatures (1000 degrees C and 1200 degrees C, respectively) on the microstructural stability of a 9Cr ODS alloy was investigated. The results show that the microstructure is relatively stable during thermal aging at 1000 degrees C up to 500 h. Within 50 h of aging at 1200 degrees C, 8-ferrite appears and its content increases with aging time. However, 8-ferrite completely disappears and hexagonal TiO2 particles with the size of 1-3 mu m are uniformly distributed in the matrix after aging for 200 h. The nano-sized oxide particles coarsen slightly at 1000 degrees C, and the average size is similar to 4.3 nm after aging for 500 h, whereas, significant coarsening takes place at 1200 degrees C after aging for more than 20 h, and the particle size increased from 3.76 nm at 20 h to 6.22 nm at 200 h. Additionally, the average grain size grows obviously after aging to 200 h. These results indicate that the HCB and hot working processes of 9Cr ODS alloy should be less than 20 h at 1200 degrees C or kept at lower temperatures to maintain the stability of nano-sized oxide particles and the overall microstructure. (c) 2022 Elsevier B.V. All rights reserved. |
| Keyword | Oxide dispersion strengthened alloy Nano-sized oxide particles Microstructural stability Coarsening High temperature |
| Funding Organization | National Key Research and Development Program ; National Natural Science Foundation of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS ; Zhejiang University |
| DOI | 10.1016/j.jallcom.2022.167691 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program[2018YFA0702900] ; National Natural Science Foundation of China[52233017] ; National Natural Science Foundation of China[51774265] ; National Natural Science Foundation of China[52173305] ; National Science and Technology Major Project of China[2019ZX06004010] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS ; Zhejiang University |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000886560400002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/176818 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Sun, Mingyue |
| Affiliation | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 4.Zhejiang Univ, Zhejiang Inst Modern Phys, Sch Phys, Lab Adv Nucl Energy Theory & Applicat, Hangzhou 310058, Zhejiang, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Jianqiang,Liu, Sheng,Xu, Bin,et al. Microstructural stability of a 9Cr oxide dispersion strengthened alloy under thermal aging at high temperatures[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,932:13. |
| APA | Wang, Jianqiang.,Liu, Sheng.,Xu, Bin.,Sun, Mingyue.,Liu, Xiang.,...&Li, Yiyi.(2023).Microstructural stability of a 9Cr oxide dispersion strengthened alloy under thermal aging at high temperatures.JOURNAL OF ALLOYS AND COMPOUNDS,932,13. |
| MLA | Wang, Jianqiang,et al."Microstructural stability of a 9Cr oxide dispersion strengthened alloy under thermal aging at high temperatures".JOURNAL OF ALLOYS AND COMPOUNDS 932(2023):13. |
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