Fabrication of functionally radial graded metallic foam

Zhang Yi (1) , Zang Xiao-Yun , Wang Ke (2) , He Si-Yuan (1) , Liu Jia-Gui (1) , Zhao Wei (1) , Xiao-Lu Gong (3) , Yu Jin

1 SEU - Nanjing Southeast University
2 College of Information and Technology Science [Jilin]
3 LASMIS - Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée

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.

Domaines: Mécanique des matériaux [physics.class-ph]

Zhang Yi, Zang Xiao-Yun, Wang Ke, He Si-Yuan, Liu Jia-Gui, et al.. Fabrication of functionally radial graded metallic foam. Materials Letters, 2019, pp.127292. ⟨10.1016/j.matlet.2019.127292⟩. ⟨hal-02428587⟩