Sluggish hydrogen diffusion and hydrogen decreasing stacking fault energy in a high-entropy alloy
文献类型：期刊论文
| 作者 | Xie ZC(谢周璨)2,3,4; Wang YJ(王云江)2,3,4 ; Lu CS(卢春生)1; Dai LH(戴兰宏)2,3,4
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| 刊名 | MATERIALS TODAY COMMUNICATIONS
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 26页码:7 |
| 关键词 | High entropy alloys Hydrogen embrittlement Diffusion barrier Chemical order Stacking fault energy |
| ISSN号 | 2352-4928 |
| DOI | 10.1016/j.mtcomm.2020.101902 |
| 通讯作者 | Dai, Lanhong(lhdai@lnm.imech.ac.cn) |
| 英文摘要 | Hydrogen diffusion and its interaction with dislocations play an important role in hydrogen embrittlement, however, such a process in multiple-principal high entropy alloys (HEAs) is still elusive. Here, first-principles calculations were performed to investigate the solution and diffusion of hydrogen and its effect on the stacking fault energy of FeCoNiCrMn. It is shown that the unique lattice distortion in HEAs causes a wide distribution of local hydrogen solution energy, and the trapping of hydrogen in low energy sites increases diffusion barriers. The zigzag path and asymmetry of forward and backward diffusion result in the sluggish diffusion of hydrogen. Furthermore, hydrogen reduces unstable and stable stacking fault energies, originated from the transfer of electron between hydrogen and metal atoms, which promotes formation of deformation twins. This provides a theoretical guidance for designing novel engineering materials with optimal combination of their mechanical properties and hydrogen embrittlement resistance. |
| 分类号 | 二类 |
| 资助项目 | National Natural Science Foundation of China[11790292] ; National Natural Science Foundation of China[11672299] ; National Key Research and Development Program of China[2017YFB0702003] ; Strategic Priority Research Program[XDB22040302] ; Strategic Priority Research Program[XDB22040303] ; Key Research Program of Frontier Sciences[QYZDJSSW-JSC011] ; Science Challenge Project[TZ2016001] ; Youth Promotion Association of Chinese Academy of Sciences[2017025] ; State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000634297300004 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences ; Science Challenge Project ; Youth Promotion Association of Chinese Academy of Sciences ; State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86365]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Curtin Univ, Sch Civil & Mech Engn, Perth, WA 6845, Australia 2.CAS Ctr Excellence Complex Syst Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China; 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Xie ZC,Wang YJ,Lu CS,et al. Sluggish hydrogen diffusion and hydrogen decreasing stacking fault energy in a high-entropy alloy[J]. MATERIALS TODAY COMMUNICATIONS,2021,26:7. |
| APA | 谢周璨,王云江,卢春生,&戴兰宏.(2021).Sluggish hydrogen diffusion and hydrogen decreasing stacking fault energy in a high-entropy alloy.MATERIALS TODAY COMMUNICATIONS,26,7. |
| MLA | 谢周璨,et al."Sluggish hydrogen diffusion and hydrogen decreasing stacking fault energy in a high-entropy alloy".MATERIALS TODAY COMMUNICATIONS 26(2021):7. |
入库方式： OAI收割
来源：力学研究所
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