Abstract：The aluminum sponge with porosity of 92%-98% was prepared by the combined method of complex model casting and seepage flow techniques， and the flammable polyurethane foam ball was employed as filling material. The mechanical properties of aluminum sponge were investigated. The results show that the compression curve of aluminum sponge is approximately divided into three stages： linear elastic stage， platform stage and densification stage. The pore structure is easy to be damaged due to its thin pore edge， and the yield strength of aluminum sponge decreases rapidly with the increase of porosity. The energy absorption curve of aluminum sponge is approximately linear， and the energy absorption efficiency at the platform stage is between 60%-80%.
[1]Baumeister J, Banhart J, Weber M.Aluminium foams for transport industry[J].Materials and Design, 1997, 18(46):217-220[2]Gibson L J, Ashby M F.Cellular solids: structure and properties[M]. 2nd edition. New York: Cambridge University Press, 1997. 18-41[3]Ashby M F, Evans A G, Fleck N A, et al.Metal Foams: A Design Guide[M]. Boston: B-H Press, 2000[4]Degischer H P.Kriszt B.多孔泡沫金属[M]. 左孝青等译. 北京: 化学工业出版社, 2004[5]李海娟, 王录才, 王芳, 等.可溶石膏型制取泡沫铝的工艺研究[J].机械工程材料, 2004, 28(5):20-21[6]Yamada Y, Shimojima K, Sakaguchi Y, et al.Effects of heat treatment on compressive properties of AZ91 Mg and SG91A Al foams with open-cell structure[J].[J].Materials Science and Engineering, 2000, 1(A280):225-228[7]Cheng H F, Han F S.Compressive behavior and energy absorbing characteristic of open cell aluminum foam filled with silicate rubber[J][J].Scripta Materialia, 2003, 49(1):583-586[8]张伟开, 何德坪, 汤小东, 刘兵.海绵铝的形成及其孔结构[J].材料热处理学报, 2005, 26(6):34-38[9]张伟开, 李乃哲, 何德坪.渗流法制备高孔隙率多孔铝[J].中国有色金属学报, 2005, 15(8):1248-1252
2016, Vol. 26 
