Chemical composition dependent local lattice distortions and magnetism in high entropy alloys
文献类型：期刊论文
| 作者 | Tan YY(谭园园)5; Su MY(苏明耀)4,5; Xie ZC(谢周璨)4,5; Chen, Zhong-Jun3; Gong, Yu3; Zheng, Li-Rong3; Shi, Zhan3; Mo, Guang3; Li, Yong2 ; Li, Ling-Wei2
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| 刊名 | INTERMETALLICS
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 129页码:8 |
| ISSN号 | 0966-9795 |
| 关键词 | Local lattice distortion Chemical composition High entropy alloy Magnetism XAFS |
| DOI | 10.1016/j.intermet.2020.107050 |
| 通讯作者 | Dai, Lan-Hong(lhdai@lnm.imech.ac.cn) |
| 英文摘要 | A distinguish feature of high-entropy alloys (HEAs) is well-defined crystalline structure with chemical disorder. While, local lattice distortion is a longstanding issue in HEAs and more challenging than traditional alloys. However, reports on local lattice distortion of HEAs are rarely related to chemical compositions. Here, we use synchrotron radiation facility based XRD and X-ray absorption fine structure (XAFS) to examine averaged lattice distortion and element specified local lattice distortions in CrCoNi medium-entropy alloy (MEA), CrFeCoNi and CrMnFeCoNi HEAs. The results showed that averaged lattice distortions observed from XRD patterns are subtle. The distortion magnitude centred around certain alloying element observed in XAFS spectra keeps in the same order, generally, Ni > Co > Fe > Cr > Mn. The observed positive strains are proposed to counteract negative strains and thus leading to observation of subtle averaged lattice distortion. The XANES results suggested that local electron structure flexibility of element might be one factor that contributes to local lattice distortions. The magnetic measurements indicated a paramagnetic state of all the studied alloys at ambient conditions. This study provides key information on local lattice distortion and its correlations with chemical compositions in HEAs, which is of crucial importance in tailoring properties of advanced HEAs and other multicomponent alloys. |
| 分类号 | 二类/Q1 |
| WOS关键词 | STABILITY ; ELEMENTS ; STRAIN |
| 资助项目 | National Key Research and Development Program of China[2017YFB0702003] ; NSFC[12002341] ; NSFC[11790292] ; NSFC[11672316] ; Strategic Priority Research Program[XDB22040302] ; Strategic Priority Research Program[XDB22040303] ; Key Research Program of Frontier Sciences[QYZDJSSW-JSC011] ; Science Challenge Project[TZ2016001] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000604531800003 |
| 资助机构 | National Key Research and Development Program of China ; NSFC ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences ; Science Challenge Project ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics |
| 其他责任者 | Dai, Lan-Hong |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/85918]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China 2.Hangzhou Dianzi Univ, Sch Mat & Environm Engn, Inst Adv Magnet Mat, Hangzhou 310018, Peoples R China; 3.Univ Chinese Acad Sci, Chinese Acad Sci & Grad, Inst High Energy Phys, Beijing 100049, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Tan YY,Su MY,Xie ZC,et al. Chemical composition dependent local lattice distortions and magnetism in high entropy alloys[J]. INTERMETALLICS,2021,129:8. |
| APA | 谭园园.,苏明耀.,谢周璨.,Chen, Zhong-Jun.,Gong, Yu.,...&戴兰宏.(2021).Chemical composition dependent local lattice distortions and magnetism in high entropy alloys.INTERMETALLICS,129,8. |
| MLA | 谭园园,et al."Chemical composition dependent local lattice distortions and magnetism in high entropy alloys".INTERMETALLICS 129(2021):8. |
入库方式： OAI收割
来源：力学研究所
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