Intergrowth structure of Laves within mu phases in Co-Al-W base superalloy
文献类型：期刊论文
| 作者 | Liu, L. R.2; Zhou, B. X.2; Wang, Q. F.1; Yang, Y. H.3; Yu, J. J.3; Sun, B. Z.1 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2020-12-05 |
| 卷号 | 844页码:8 |
| ISSN号 | 0925-8388 |
| 关键词 | Co-Al-W base Superalloy Topologically close-packed phases Intergrowth Quaternary compounds Substitution |
| DOI | 10.1016/j.jallcom.2020.155822 |
| 通讯作者 | Sun, B. Z.(bzsun@imp.neu.edu.cn) |
| 英文摘要 | In a Co-Al-W base superalloy, two types of topologically close-packed (TCP) phases, mu and Laves phases, were investigated by high-resolution transmission electron microscopy, scanning transmission electron microscopy and energy dispersive X-ray spectroscopy. It is found that an intergrowth structure of Laves within m phases can be formed and both have a completely coherent interface relationship. With the aid of image simulation, both mu and Laves phases are identified as the quaternary compounds containing Co, Cr, W and Mo. Compared to Co7W6-type mu phase, W1 and W3-sites are the preferred sites of substitution by Mo atoms and Co1-site is a preferred site of substitution by Cr atoms in the quaternary mu phase, leading to the atomic displacement and an alteration of lattice parameter. In contrast to Co2W-type Laves phase, the newly formed quaternary Laves phase can maintain the C14-type Laves structure although Co and W are substituted partially by Cr and Mo respectively. (C) 2020 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[51701210] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000560367000008 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/140193]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Sun, B. Z. |
| 作者单位 | 1.Northeastern Univ, Inst Mat, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Dept Superalloys, Shenyang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, L. R.,Zhou, B. X.,Wang, Q. F.,et al. Intergrowth structure of Laves within mu phases in Co-Al-W base superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,844:8. |
| APA | Liu, L. R.,Zhou, B. X.,Wang, Q. F.,Yang, Y. H.,Yu, J. J.,&Sun, B. Z..(2020).Intergrowth structure of Laves within mu phases in Co-Al-W base superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,844,8. |
| MLA | Liu, L. R.,et al."Intergrowth structure of Laves within mu phases in Co-Al-W base superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 844(2020):8. |
入库方式： OAI收割
来源：金属研究所
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