Compressive properties of aluminum foam produced by powder-Carbamide spacer route |
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| Affiliation: | 1. State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China;2. Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science & Engineering, Southeast University, Nanjing 210096, China;3. Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China;1. National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan;2. National Institute of Advanced Industrial Science and Technology, 1-1-1, Umezono, Tsukuba, Ibaraki 305-8568, Japan;3. Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-7, Megro-ku, Tokyo 153-8904, Japan;1. School of Engineering and Information Technology, UNSW Canberra, ACT 2610, Australia;2. Department of Applied Mathematics, Australian National University, Canberra ACT 0200, Australia;3. Electron Microscope Unit, Mark Wainwright Analytical Centre (MWAC), The University of New South Wales, Sydney, NSW 2052, Australia;4. Microscopy and Microanalysis Facility (MMF), John de Laeter Centre (JdLC), Curtin University, WA 6102, Australia |
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| Abstract: | Effects of cell shape and size, and relative density of aluminum foam on its compressive behavior have been investigated. Aluminum foams were produced via aluminum powder-Carbamide spacer route. The results show that angular cells significantly reduce mechanical properties of the foam. They also indicate that compressive properties of the foams, including plateau stress (σpl), densification strain (εD), and energy absorption, increase by cell size and relative density of the foams. Experimental results were compared with theoretical predictions; they were fairly corresponded to theoretical conceptions; this arises from near-ideal architecture of the foams with almost spherical cells, in this study. Constant values of C, n and α in theoretical modulus and densification strain equations wear calculated as 1.22, 2.09 and 0.95, respectively. The values indicate compressive behavior approaches to ideal morphology foam via employing spherical space holder. |
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| Keywords: | Aluminum foam Powder processing Cell size Relative density Mechanical properties |
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