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

IMR OpenIR

	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
发表期刊	MRS BULLETIN
ISSN	0883-7694
卷号	43 期号:1 页码:35-42
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.
部门归属	[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
关键词	Yield Strength Gold Nanowires Scaling Laws Uniaxial Compression Anomalous Compliance Excess Elasticity Poissons Ratio Behavior Foams Au
学科领域	Materials Science, Multidisciplinary ; Physics, Applied
资助者	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]
收录类别	SCI
语种	英语
WOS记录号	WOS:000419842500012
引用统计	被引频次：74[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79613
专题	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.