Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy
文献类型：期刊论文
| 作者 | Li, Yawei1,2; Wang, Li2; He, Yufeng1,2; Zheng, Wei2; Lou, Langhong2; Zhang, Jian2 |
| 刊名 | SCRIPTA MATERIALIA
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 217页码:5 |
| 关键词 | Superalloy Creep Interfacial dislocation networks Scanning transmission electron microscopy Scanning electron microscopy |
| ISSN号 | 1359-6462 |
| DOI | 10.1016/j.scriptamat.2022.114769 |
| 通讯作者 | Wang, Li(wangli@imr.ac.cn) |
| 英文摘要 | Generally, the denser dislocation networks in the gamma/gamma' interface should result in a lower minimum creep rate in single crystal Ni-based superalloy at high temperatures. However, in this study, with rising temperature from 1100 degrees C to 1150 degrees C, the spacing of dislocation networks decreases almost linearly, while the minimum creep rate increases nonlinearly. This is attributed to the enhanced dislocation-climb in the gamma/gamma' interface and gamma'-cutting by a<010> superdislocations. Further, dislocation networks can act as a superdislocation source during the secondary creep stage besides the well-known strengthening effect. |
| 资助项目 | National Natural Science Foundation of China[51871210] ; National Natural Science Foundation of China[51771204] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000805932000003 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/174786]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Li |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yawei,Wang, Li,He, Yufeng,et al. Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy[J]. SCRIPTA MATERIALIA,2022,217:5. |
| APA | Li, Yawei,Wang, Li,He, Yufeng,Zheng, Wei,Lou, Langhong,&Zhang, Jian.(2022).Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy.SCRIPTA MATERIALIA,217,5. |
| MLA | Li, Yawei,et al."Role of interfacial dislocation networks during secondary creep at elevated temperatures in a single crystal Ni-based superalloy".SCRIPTA MATERIALIA 217(2022):5. |
入库方式： OAI收割
来源：金属研究所
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