Browsing by Author "Yu Jin"

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Fabrication of functionally radial graded metallic foam
(2020-04-01)
Zhang Yi
;
Zang Xiao-yun
;
Wang Ke
;
He Si-yuan
;
Liu Jia-gui
Radial graded structures in biological materials, e.g. bones, are lightweight and exhibit good mechanical properties. This paper developed a novel method to fabricate a functionally radial graded aluminum foam. In this method, a sequential solidification was applied from the periphery to the inner on the foaming aluminum melt to obtain a radial gradient. The graded foams were then served as fillers for thin-walled tubes. Quasi-static compressive tests were conducted on the foams and foam-filled tubes. The results indicated that the graded foam-filled tubes exhibited improved crushing resistance and specific energy absorption, compared to the uniform foam-filled tube with similar weight. (C) 2019 Elsevier B.V. All rights reserved.