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材料工程  2013 

镁基多孔材料准静态压缩行为与吸能特性研究

DOI: 10.3969/j.issn.1001-4381.2013.02.006, PP. 29-34

Keywords: 镁基多孔材料,压缩行为,吸能特性

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Abstract:

基于可去除填充颗粒的粉末冶金技术制备了孔隙率在40%~80%,孔径在1~2mm内变化的多孔镁和多孔AZ91D镁合金,并系统考察了材料的准静压压缩行为和吸能特性。结果发现,镁基多孔材料的压缩应力-应变曲线由线性弹性区、平台和致密化区域组成,但曲线锯齿状波动较大,表明材料的脆性断裂机制。压缩屈服强度与相对密度的关系可通过Gibson-Ashby模型来理解,但屈服强度对孔径的依赖性较低。吸能本领随相对密度的增加而增加,相同条件下,多孔AZ91D镁合金的吸能本领高于多孔镁,多孔镁的吸能效率则高于多孔AZ91D镁合金。

References

[1]  BANHART J. Manufacture, characterization and application of cellular metals and metal foams [J]. Prog Mater Sci, 2001, 46(6): 559-632.
[2]  何德平.超轻多孔金属 [M].北京:科学出版社,2006. 1-7.
[3]  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.
[4]  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.
[5]  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.
[6]  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.
[7]  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.
[8]  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.
[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.

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