Deformation of open-cell aluminum foam

被引：180

作者：

San Marchi, C ^{[1
]}

Mortensen, A ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Lab Mech Met, CH-1015 Lausanne, Switzerland

来源：

ACTA MATERIALIA | 2001年 / 49卷 / 19期

关键词：

aluminum; foams; mechanical properties (elastic; plastic); infiltration;

D O I：

10.1016/S1359-6454(01)00294-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanical properties of high-purity aluminum foams produced by replication from salt precursors are measured in compression. These foams have homogeneous open-porosity, cell sizes equivalent to the particle size of the precursor salt (similar to 500 mum in this case) and relative densities near 25%. Deformation is uniform and strain hardening similar to the bulk material is observed without a plateau stress. A simple analytical model based on beam theory is employed to describe the flow stress and the change in stiffness of the foams as a consequence of compression. This model leads to a modified scaling law for the flow stress of metallic foams. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd, All rights reserved.

引用

页码：3959 / 3969

页数：11

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