Fracture universality in amorphous nanowires
文献类型:期刊论文
作者 | Zhao, Kun2,3; Wang, Yun-Jiang2,3![]() ![]() |
刊名 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
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出版日期 | 2023-04-01 |
卷号 | 173页码:27 |
ISSN号 | 0022-5096 |
关键词 | Amorphous solid Fracture Size effect Shear banding Necking |
DOI | 10.1016/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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