Microstructural characterization of the M23C6 carbide in a long-term aged Ni-based superalloy
文献类型：期刊论文
| 作者 | Hu, X. B.2,3; Qin, X. Z.1; Hou, J. S.1; Zhou, L. Z.1; Ma, X. L.3 |
| 刊名 | PHILOSOPHICAL MAGAZINE LETTERS
 |
| 出版日期 | 2017 |
| 卷号 | 97期号:2页码:43-49 |
| 关键词 | Nickel-based superalloys long-term ageing transmission electron microscopy M23C6-type carbide structural instability |
| ISSN号 | 0950-0839 |
| DOI | 10.1080/09500839.2016.1273554 |
| 通讯作者 | Ma, X. L.(xlma@imr.ac.cn) |
| 英文摘要 | The microstructural features of M23C6 carbide in a long-term aged heat- and corrosion-resistant Ni-based superalloy have been investigated in detail using various kinds of transmission electron microscope (TEM) techniques. It is found that TEM contrast, which is related to structural and chemical inhomogeneities inside the grains, always exists in the interior of grains in the alloy. The structure of these inhomogeneous regions has been determined to be the same as that of the and t-M23C6 phases, where t-M23C6 indicates a transitional and metastable phase. Although possessing the same structure as the M23C6 phase, the chemical composition of the t-M23C6 is different from that of the M23C6 phase. Compared with M23C6, t-M23C6 is richer in Ni, Co, Al and Ti but poorer in W, Mo and Cr. This phenomenon of structural and chemical inhomogeneity demonstrates that pristine M23C6 carbide (p-M23C6) precipitated in standard heat-treated samples is unstable. Therefore, upon long-term ageing treatment, Ni, Co, Al and Ti may locally enrich inside the p-M23C6 phase, finally forming the phase, which can be described by the decomposition reaction p-M23C6M23C6+. |
| 资助项目 | National Natural Science Foundation of China[11327901] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000395061900001 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/123896]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ma, X. L. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang, Peoples R China 2.Japan Fine Ceram Ctr, Nanostruct Res Lab, Nagoya, Aichi, Japan 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, X. B.,Qin, X. Z.,Hou, J. S.,et al. Microstructural characterization of the M23C6 carbide in a long-term aged Ni-based superalloy[J]. PHILOSOPHICAL MAGAZINE LETTERS,2017,97(2):43-49. |
| APA | Hu, X. B.,Qin, X. Z.,Hou, J. S.,Zhou, L. Z.,&Ma, X. L..(2017).Microstructural characterization of the M23C6 carbide in a long-term aged Ni-based superalloy.PHILOSOPHICAL MAGAZINE LETTERS,97(2),43-49. |
| MLA | Hu, X. B.,et al."Microstructural characterization of the M23C6 carbide in a long-term aged Ni-based superalloy".PHILOSOPHICAL MAGAZINE LETTERS 97.2(2017):43-49. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。