Mechanical response of nanoporous metals: A story of size, surface stress, and severed struts

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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.
刊名	MRS BULLETIN
	2018
卷号	43 期号:1 页码:35-42
关键词	Yield Strength Gold Nanowires Scaling Laws Uniaxial Compression Anomalous Compliance Excess Elasticity Poissons Ratio Behavior Foams Au
ISSN号	0883-7694
英文摘要	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.; 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.
学科主题	Materials Science, Multidisciplinary ; Physics, Applied
语种	英语
资助机构	National 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]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79613]
专题	金属研究所_中国科学院金属研究所
通讯作者	Jin, HJ (reprint author), Chinese Acad Sci, Inst Met Res, Beijing, Peoples R China.
推荐引用方式 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.