MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 卷:525 |
Compressive properties of a closed-cell aluminum foam as a function of strain rate and temperature | |
Article | |
Cady, C. M.1  Gray, G. T., III1  Liu, C.1  Lovato, M. L.1  Mukai, T.2  | |
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA | |
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan | |
关键词: Aluminum foam; High-strain rate; Closed-cell foam; | |
DOI : 10.1016/j.msea.2009.07.007 | |
来源: Elsevier | |
【 摘 要 】
The compressive constitutive behavior of a closed-cell aluminum foam (ALPORAS) manufactured by Shinko Wire Co. in Japan was evaluated under static and dynamic loading conditions as a function of temperature. High-strain-rate tests (1000-2000 s(-1)) were conducted using a split-Hopkinson pressure bar (SHPB). Quasi-static and intermediate-strain-rate tests were conducted on a hydraulic load frame. A small but discernable change in the flow stress behavior as a function of strain rate was measured. The deformation behavior of the Al-foam was however found to be strongly temperature dependent under both quasi-static and dynamic loading. Localized deformation and stress state instability during testing of metal foams is discussed in detail since the mechanical behavior over the entire range of strain rates indicates non-uniform deformation. Additionally, investigation of the effect of residual stresses created during manufacturing on the mechanical behavior was investigated. (C) 2009 Published by Elsevier B.V.
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