| Chemical short-range order in Fe50Mn30Co10Cr10 high-entropy alloy | |
Liu D(刘动)1,2 ; Wang, Q.3; Wang J(王健)1; Chen XF(陈雪飞)1,2; Jiang P(姜萍)1; Yuan FP(袁福平)1,2; Cheng, Z. Y.4; Ma, E.5; Wu XL(武晓雷)1,2
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| Corresponding Author | Cheng, Z. Y.([email protected]) ; Ma, E.([email protected]) ; Wu, X. L.([email protected]) |
| Source Publication | MATERIALS TODAY NANO
 |
| 2021-12-01 | |
| Volume | 16Pages:11 |
| ISSN | 2588-8420 |
| Abstract | Chemical short-range order (CSRO) is generally possible in concentrated solid solutions and currently of considerable interest for multi-principal element alloys. However, a convincing demonstration of CSRO has been challenging and achieved thus far only for ternary medium-entropy alloys such as VCoNi. Here, we report definitive proof of CSRO in a quaternary face-centered-cubic Fe50Mn30Co10Cr10 high-entropy alloy, acquired from systematic electron microscopy experiments. The evidence includes extra diffuse disks in nano-beam electron diffraction patterns, images in state-of-the-art aberration-corrected scanning transmission electron microscope, as well as compositional profiles across neighboring atomic planes/columns in atomic-resolution chemical maps. The CSRO regions are found to occupy an areal fraction of 20% and have dimensions on a sub-nanometer scale. This length scale, as well as the diffraction features of the CSRO, are different from those of intermetallic compound precipitates; as such, the CSRO is not a growing stage of a nucleated second phase, the precipitation of which has been dealt with previously in classical alloys. We further conducted a spatial correlation analysis of the concentrations in atomic columns in the chemical map, enabling us to uncover a general tendency toward nearest-neighbor chemical ordering, specifically, preference for unlike species (such as Fe-Mn) and avoidance for like-species (such as Fe-Fe). The persistence of this trend, the same as that found in VCoNi MEA, recently, is somewhat intriguing for a high-entropy alloy in which all the constituent elements are similar in atomic size and have rather a small enthalpy of mixing. (C) 2021 The Author(s). Published by Elsevier Ltd. |
| Keyword | Chemical short-range order High-entropy alloy Spatially correlated distribution Fe50Mn30Co10Cr10 |
| DOI | 10.1016/j.mtnano.2021.100139 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000708164600002 |
| WOS Keyword | ELECTRON-DIFFRACTION ; TRANSFORMATION ; DEFORMATION |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| Funding Project | Ministry of Science and Technology of China[2019YFA0209900] ; Ministry of Science and Technology of China[2017YFA0204402] ; NSFC Basic Science Center Program[11988102] ; NSFC[11972350] ; NSFC[11890680] ; Chinese Academy of Sciences[XDB22040503] ; Foundation of Institute of Materials, China Academy of Engineering Physics[TP02201713] |
| Funding Organization | Ministry of Science and Technology of China ; NSFC Basic Science Center Program ; NSFC ; Chinese Academy of Sciences ; Foundation of Institute of Materials, China Academy of Engineering Physics |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Cheng, Z. Y. ; Ma, E. ; Wu, X. L. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87621 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Sci & Technol Surface Phys & Chem Lab, POB 9-35, Jiangyou 621908, Peoples R China; 4.Tsinghua Univ, Natl Ctr Electron Microscopy Beijing, Sch Mat Sci & Engn, Beijing 100084, Peoples R China; 5.Xi An Jiao Tong Univ, Ctr Alloy Innovat & Design CAID, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China |
| Recommended Citation GB/T 7714 | Liu D,Wang, Q.,Wang J,et al. Chemical short-range order in Fe50Mn30Co10Cr10 high-entropy alloy[J]. MATERIALS TODAY NANO,2021,16:11.Rp_Au:Cheng, Z. Y., Ma, E., Wu, X. L. |
| APA | 刘动.,Wang, Q..,王健.,陈雪飞.,姜萍.,...&武晓雷.(2021).Chemical short-range order in Fe50Mn30Co10Cr10 high-entropy alloy.MATERIALS TODAY NANO,16,11. |
| MLA | 刘动,et al."Chemical short-range order in Fe50Mn30Co10Cr10 high-entropy alloy".MATERIALS TODAY NANO 16(2021):11. |
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| Jp2021F536.pdf（4939KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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