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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Interface Evolution in the Process of Fabricating Aluminum Foam Sandwiches
verfasst von : Hao Lin, Hongjie Luo, Wei Sun, Guangchun Yao
Erschienen in: Light Metals 2014
Verlag: Springer International Publishing
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Aluminum foam sandwiches (AFS) which have the properties of high impact strength, efficient capacity of energy dissipation, high damping and thermal insulation, were obtained by combining steel face sheets with a lightweight closed-cell aluminum foam core. The steel sheet was hot-dipped in pure aluminum and the precursor was prepared by powder metallurgy method. The precombination of the precursor and the hot-dipped steel sheet was carried out by using hot-pressing technology. The three-layer composite was baked rapidly in a furnace to fabricate AFS. It was found that the steel sheet coated by pure aluminum combined very well with the precursor by hot-press. Then the further diffusion was promoted in the foaming process. The boundary of the AFS which was between the foam core and the face sheet had a high strength by diffusion bonding. Simplified theoretical diffusion model was introduced to explain the evolution of the boundary in the hot-pressing process.