The Quasi-static Compressive Behavior and Energy Absorption Properties of Mg-based Porous Materials
HAO Gang-ling1,2, HAN Fu-sheng2, WANG Wei-guo1
1. Institute of Materials Physics, College of Physics and Electronic Information, Yan'an University, Yan'an 716000, Shaanxi, China;
2. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
Abstract：Porous Mg and porous AZ91D alloy were prepared using powder metallurgy method basing on space holding fillers. The porosity and pore size can be controlled in the range of 40%-80% and 0.5-2.0mm respectively. The investigation was carried out on the quasi-static compressive behavior and energy absorption properties of the Mg-based porous materials. The result shows that the compressive stress-strain curves were consisted of linear elastic region, plateau and densification region. The plateau region is serrated which indicates a brittle deformation mechanism. The dependence of yield strength on relative density can be understood in terms of Gibson-Ashby model, but the effect of pore size is small that can be neglectable. The energy absorption capacity of the Mg-based porous materials increases with the relative density increasing. Porous AZ91D alloy at the same conditions exhibits a higher energy absorption capacity than the porous Mg, that however represents a higher energy absorption efficiency than the porous AZ91D alloy.
郝刚领, 韩福生, 王伟国. 镁基多孔材料准静态压缩行为与吸能特性研究[J]. 材料工程, 2013, (2): 29-34.
HAO Gang-ling, HAN Fu-sheng, WANG Wei-guo. The Quasi-static Compressive Behavior and Energy Absorption Properties of Mg-based Porous Materials. Journal of Materials Engineering, 2013, (2): 29-34.
[1] BANHART J. Manufacture, characterization and application of cellular metals and metal foams [J]. Prog Mater Sci, 2001, 46(6): 559-632.[2] NAKAJIMA H, KANETAKE N. Porous metals and metal foaming technology. Proceedings of 4th international conference on porous metals and metal foaming technology.Kyoto:Japan Institute of Metals,2006.1-10.[3] 何德平.超轻多孔金属 [M].北京:科学出版社,2006. 1-7.[4] YAMADA Y, SHIMOJIMA K, SAKAGUCHI Y, et al. Compressive properties of open-cellular SG91A Al and AZ91 Mg [J]. Materials Science and Engineering A, 1999, 272(2): 455-458.[5] MUKAI T, KANAHASHI H, YAMADA Y, et al. Dynamic compressive behavior of an ultra-lightweight magnesium foam [J]. Scr Mater, 1999, 41(4): 365-371.[6] WEN C E, MABUCHI M, YAMADA Y, et al. Processing of biocompatible porous Ti and Mg [J]. Scr Mater, 2001, 45(10-19): 1147-1153.[7] WEN C E, YAMADA Y, SHIMOJIMA K, et al. Compressibility of porous magnesium foam: dependency on porosity and pore size [J]. Materials Letters, 2004, 58(3-4): 357-360.[8] HAO Gang-ling, HAN Fu-sheng, LI Wei-dong. Processing and mechanical properties of magnesium foam [J]. Journal of porous materials, 2009, 16(2): 251-256.[9] GENT A N, RUSCH K C. Permeability of open-cell foamed materials [J]. J Cell Plast, 1966, 2(1): 46-51.[10] THORNTON P H, MAGEE C L. The deformation of aluminium foams [J]. Metall Trans A, 1975, 6(6): 1253-1263.[11] MILTZ J, GRUENBAUM G. Evaluation of cushioning properties of plastic foams from compressive measurements [J]. Polymer Eng Sci, 1981, 21(15): 1010-1014.[12] GIBSON L J, ASHBY M F. Cellular Solids: Structure and Properties[M].2nd ed.Cambridge: Cambridge University Press, 1997. 175-235.
2013, Vol. 
