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Mechanical response of nanoporous metals: A story of size, surface stress, and severed struts
Jin, HJ; Weissmuller, J; Farkas, D; Jin, HJ (reprint author), Chinese Acad Sci, Inst Met Res, Beijing, Peoples R China.
2018
Source PublicationMRS BULLETIN
ISSN0883-7694
Volume43Issue:1Pages:35-42
AbstractNanoporous metals made by dealloying are macroscopic network architectures that can contain approximate to 10(15) nanoscale struts or ligaments per sample. Their mechanical performance is critical to their applications as functional or lightweight high-strength materials. Testing nanoporous metals at the macroscopic scale offers opportunities for unraveling the properties of nanoscale solids in general. The central questions in this area include whether the macroscopic strength and elastic modulus of nanoporous metals can be correlated with the properties of nanoscale ligaments by the classical Gibson-Ashby equations, whether the dealloying-made network structure differs from the conventional foam metals, how network connectivity influences mechanical response, and how ligament size and surface properties affect the elastic and plastic response of nanoscale solids and that of nanoporous metals, particularly the tension-compression asymmetry in strength. This article reviews the fundamental observations of the mechanical response of nanoporous metals with a focus on gold and the emerging understanding of the aforementioned issues.; Nanoporous metals made by dealloying are macroscopic network architectures that can contain approximate to 10(15) nanoscale struts or ligaments per sample. Their mechanical performance is critical to their applications as functional or lightweight high-strength materials. Testing nanoporous metals at the macroscopic scale offers opportunities for unraveling the properties of nanoscale solids in general. The central questions in this area include whether the macroscopic strength and elastic modulus of nanoporous metals can be correlated with the properties of nanoscale ligaments by the classical Gibson-Ashby equations, whether the dealloying-made network structure differs from the conventional foam metals, how network connectivity influences mechanical response, and how ligament size and surface properties affect the elastic and plastic response of nanoscale solids and that of nanoporous metals, particularly the tension-compression asymmetry in strength. This article reviews the fundamental observations of the mechanical response of nanoporous metals with a focus on gold and the emerging understanding of the aforementioned issues.
description.department[jin, hai-jun] chinese acad sci, inst met res, beijing, peoples r china ; [weissmueller, joerg] hamburg univ technol, inst mat phys & technol, hamburg, germany ; [weissmueller, joerg] helmholtz zentrum geesthacht, hybrid mat syst grp, geesthacht, germany ; [farkas, diana] virginia tech, dept mat sci & engn, blacksburg, va usa
KeywordYield Strength Gold Nanowires Scaling Laws Uniaxial Compression Anomalous Compliance Excess Elasticity Poissons Ratio Behavior Foams Au
Subject AreaMaterials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational Key R&D Program of China [2017YFA0204401]; NSFC [51571206]; Deutsche Forschungsgemeinschaft [SFB 986]; National Science Foundation, IRD program; National Science Foundation, DMREF program; "Helmholtz-CAS Joint Research Groups" Project [HCJRG-315]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79613
Collection中国科学院金属研究所
Corresponding AuthorJin, HJ (reprint author), Chinese Acad Sci, Inst Met Res, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Jin, HJ,Weissmuller, J,Farkas, D,et al. Mechanical response of nanoporous metals: A story of size, surface stress, and severed struts[J]. MRS BULLETIN,2018,43(1):35-42.
APA Jin, HJ,Weissmuller, J,Farkas, D,&Jin, HJ .(2018).Mechanical response of nanoporous metals: A story of size, surface stress, and severed struts.MRS BULLETIN,43(1),35-42.
MLA Jin, HJ,et al."Mechanical response of nanoporous metals: A story of size, surface stress, and severed struts".MRS BULLETIN 43.1(2018):35-42.
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