Abstract
Commercial open-cell aluminum alloy foams are subjected to chemical dissolution to reduce their density. Dissolution rates are measured for various pH, temperature and alloy heat-treatment conditions, and the resulting foam structures and surface conditions are evaluated by microscopy and X-ray microcomputed tomography to identify conditions which minimize corrosive damage. The effect of uniform dissolution on foam compressive mechanical properties is interpreted in terms of these observations. A method for production of density-graded foam samples from uniform-density precursors is also demonstrated.
Original language | English (US) |
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Pages (from-to) | 150-157 |
Number of pages | 8 |
Journal | Materials Science and Engineering: A |
Volume | 447 |
Issue number | 1-2 |
DOIs | |
State | Published - Feb 25 2007 |
Funding
The authors thank Dr. O. Couteau (formerly of Northwestern University) for helpful discussions, and Mr. Joe Doll of ERG Aerospace for generously providing the Duocel ® aluminum foams used in this study. The authors also gratefully acknowledge financial support from the U.S. Department of Energy via the University of California, Lawrence Livermore National Laboratories, under contract W-7405-Eng-48 and administered by Dr. A.M. Hodge.
Keywords
- Al-6101
- Chemical machining
- Chemical milling
- Corrosion
- Functionally graded materials
- Mechanical properties
- Metallic foams
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering