Sluggish hydrogen diffusion and hydrogen decreasing stacking fault energy in a high-entropy alloy

doi:10.1016/j.mtcomm.2020.101902

IMECH-IR > 非线性力学国家重点实验室

	Sluggish hydrogen diffusion and hydrogen decreasing stacking fault energy in a high-entropy alloy
	Xie ZC(谢周璨)1,2,3; Wang YJ(王云江)1,2,3 ; Lu CS(卢春生)4 ; Dai LH(戴兰宏)1,2,3
通讯作者	Dai, Lanhong([email protected])
发表期刊	MATERIALS TODAY COMMUNICATIONS
	2021-03-01
卷号	26 页码:7
ISSN	2352-4928
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.
关键词	High entropy alloys Hydrogen embrittlement Diffusion barrier Chemical order Stacking fault energy
DOI	10.1016/j.mtcomm.2020.101902
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000634297300004
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
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
项目资助者	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
论文分区	二类
力学所作者排名	1
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86366
专题	非线性力学国家重点实验室
作者单位	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 101408, Peoples R China; 3.CAS Ctr Excellence Complex Syst Mech, Beijing 100190, Peoples R China; 4.Curtin Univ, Sch Civil & Mech Engn, Perth, WA 6845, Australia
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.

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