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Fracture universality in amorphous nanowires

文献类型：期刊论文

作者Zhao, Kun2,3; Wang, Yun-Jiang2,3; Cao, Penghui1; Wang YJ(王云江)
刊名JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
出版日期2023-04-01
卷号173页码:27
关键词Amorphous solid Fracture Size effect Shear banding Necking
ISSN号0022-5096
DOI10.1016/j.jmps.2023.105210
通讯作者Wang, Yun-Jiang(yjwang@imech.ac.cn) ; Cao, Penghui(caoph@uci.edu)
英文摘要Crystalline nanowires exhibiting a wide range of size-dependent fracture and failure modes have been extensively studied, yet the fracture behaviors of amorphous materials and their size dependence remain elusive. Here extensive atomistic simulations are performed to reveal the deformation and fracture behaviors in a broad class of amorphous nanowires with varying sizes, including CuZr, CuZrAl, FeP, Si, and a ductile Lennard-Jones system. It is found that the fracture strain "f increases with nanowire length L but decreases with diameter D, which exhibits a linear relationship with the diameter-to-length ratio as "f cc D/L, -a scaling law valid in these five distinct glassy systems understudied. We develop a theoretical model, capturing the size of plastic zone at plastic yielding and its vital role in governing the final fracture strain, which shows an agreement with the simulation data. By taking into account the intrinsic atomic -level ideal strain, remarkably, all the size-dependent fracture strain data collapse, signifying the universality of fracture nature in a broad range of glassy materials.
WOS关键词TO-DUCTILE TRANSITION ; BULK METALLIC-GLASS ; MECHANICAL-PROPERTIES ; SIZE-REDUCTION ; DYNAMICS ; BRITTLE ; FAILURE ; SIMULATION ; DEFORMATION ; PLASTICITY
资助项目National Natural Science Foundation of China[12072344] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017025] ; National Science Foundation, United States (NSF)[CMMI-1935371] ; National Science Foundation, United States (NSF)[DMR-2105328]
WOS研究方向Materials Science ; Mechanics ; Physics
语种英语
WOS记录号WOS:000925928300001
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; National Science Foundation, United States (NSF)
源URL[http://dspace.imech.ac.cn/handle/311007/91685]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Wang, Yun-Jiang; Cao, Penghui; Wang YJ(王云江)
作者单位1.Univ Calif Irvine, Dept Mech & Aerosp Engn, Irvine, CA 92697 USA
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Kun,Wang, Yun-Jiang,Cao, Penghui,et al. Fracture universality in amorphous nanowires[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2023,173:27.
APA Zhao, Kun,Wang, Yun-Jiang,Cao, Penghui,&Wang YJ.(2023).Fracture universality in amorphous nanowires.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,173,27.
MLA Zhao, Kun,et al."Fracture universality in amorphous nanowires".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 173(2023):27.

入库方式： OAI收割

来源：力学研究所

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