Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects

doi:10.1016/j.eml.2023.102067

IMECH-IR > 非线性力学国家重点实验室

	Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects
	Cheng YJ(程玉洁); 董金磊Dong, Jinlei; Shen, Yidi; Li, Fucheng; An, Qi; Jiang MQ(蒋敏强); Liu, Yanhui; Huang CG(黄晨光); Goddard, William A.; Wu XQ(吴先前)
通讯作者	Wu, Xianqian(wuxianqian@imech.ac.cn)
发表期刊	EXTREME MECHANICS LETTERS
	2023-09-01
卷号	63 页码:8
ISSN	2352-4316
摘要	Size effects are key issues that hinder the enhancement of impact resistance of films with increasing thickness. In this paper, we consider Ni2Ta amorphous metallic alloy as a prototype thin film and demonstrate that the impact resistance of metallic glass (MG) nanofilms with surface oxidation subjected to micro-ballistic impact can be increased significantly by lamination of thin monolayers, overcoming significantly the size effects in the impact resistance of MG nanofilms. Shear band formation and delamination are the dominant energy dissipation mechanisms for multilayered films under impact. Our molecular dynamics (MD) simulations confirmed that the interfaces between thin layers as modified by surface oxidation play an important role in the impact resistance of the multilayered films. Surface oxidation of multilayered films increases significantly the impact resistance due to oxidation-induced curly structure and the increase of the interfacial strength, which contributes greatly to the energy dissipation during impact. However, excessive oxidation initiates defects near the surfaces of the monolayers to therefore reduce greatly impact resistance of the multilayered films. Our work suggests an effective pathway for fabricating high-performance multilayered MG films with extraordinary impact resistance by overcoming the size effects through the lamination of monolayers. (c) 2023 Elsevier Ltd. All rights reserved.
关键词	Multilayered metallic glass Impact resistance Size effect Micro-ballistic impact Molecular dynamics simulation
DOI	10.1016/j.eml.2023.102067
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001077151900001
关键词[WOS]	TOTAL-ENERGY CALCULATIONS ; MOLECULAR-DYNAMICS ; SHEAR BANDS ; ARMOR
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
资助项目	National Key R&D Pro-gram of China[2021YFA0719200] ; National Natural Sci-ence Foundation of China[12272391] ; National Natural Sci-ence Foundation of China[12232020] ; Office of Naval Research, United States[N00014-22-S-B001] ; National Outstanding Youth Science Fund Project of National Natural Science Foundation of China[12125206]
项目资助者	National Key R&D Pro-gram of China ; National Natural Sci-ence Foundation of China ; Office of Naval Research, United States ; National Outstanding Youth Science Fund Project of National Natural Science Foundation of China
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Wu, Xianqian
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/93118
专题	非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Cheng YJ,董金磊Dong, Jinlei,Shen, Yidi,et al. Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects[J]. EXTREME MECHANICS LETTERS,2023,63:8.
APA	程玉洁.,董金磊Dong, Jinlei.,Shen, Yidi.,Li, Fucheng.,An, Qi.,...&吴先前.(2023).Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects.EXTREME MECHANICS LETTERS,63,8.
MLA	程玉洁,et al."Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects".EXTREME MECHANICS LETTERS 63(2023):8.

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