Failure mechanisms in metal/metal hybrid nanocrystalline microtruss materials

被引：14
|
作者：
Bele, E. [1 ]
Bouwhuis, B. A. [1 ]
Hibbard, G. D. [1 ]
机构：
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada
来源：
ACTA MATERIALIA | 2009年 / 57卷 / 19期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Nanocrystalline materials; Cellular materials; Buckling; Electroplating; PERIODIC CELLULAR MATERIALS; SANDWICH CORES; COMPRESSION; NICKEL; STABILITY; COATINGS; BEHAVIOR; METALS; FOAMS;
D O I：
10.1016/j.actamat.2009.08.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
New types of hybrid nanocrystalline cellular materials can be created by electrodepositing ultra-high-strength nanocrystalline sleeves on microtruss cores. Electrodeposition creates an interconnected network of nanocrystalline tubes that controls the mechanical properties of the cellular hybrid. Although they have exceptional mechanical properties, the hierarchical structure of these materials means that there is a complex set of mechanisms involved during failure, including inelastic buckling of the composite nanocrystalline struts and nanocrystalline.: sleeve fracture. This study uses a combination of finite-element and experimental methods to investigate the effect of material and architectural failure on the compressive strength of nanocrystalline Ni-reinforced aluminum microtrusses. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5927 / 5935
页数：9
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