在氢气或氢气和氩气的混合高压气氛中,采用定向凝固技术制备规则多孔铜材料;在室温下测试不同气孔率规则多孔铜在不同方向的压缩性能;研究气孔率和压缩方向对规则多孔铜力学性能的影响规律.结果表明:当气孔率和压缩方向不同时,规则多孔铜的压缩应力-应变曲线表现出不同的特征;当压缩方向相同时,规则多孔铜的压缩屈服强度随气孔率的增加而降低;规则多孔铜的力学性能呈现明显的各向异性,其屈服强度和能量吸收能力随着压缩方向与气孔方向夹角的增大而减小;当压缩方向与气孔方向的夹角为0°时,其屈服强度和能量吸收能力最大.
参考文献
| [1] | 刘培生.多孔材料引论[M].北京:清华大学出版社,2004:4-9. |
| [2] | 杨雪娟,刘颖,李梦,涂铭旌.多孔金属材料的制备及应用[J].材料导报,2007(z1):380-383. |
| [3] | 杨亚政,杨嘉陵,曾涛,方岱宁.轻质多孔材料研究进展[J].力学季刊,2007(04):503-516. |
| [4] | 张华伟,李言祥,刘源.Gasar工艺中金属-氢二元相图的研究[J].金属学报,2005(01):55-59. |
| [5] | YUAN LIU;YANXIANG LI;JIANG WAN .Metal-Gas Eutectic Growth during Unidirectional Solidification[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2006(9):2871-2878. |
| [6] | SHAPOVALOV V I .Method of manufacture of porous articles[P].USA patent:181549,1993-01-26. |
| [7] | ALVAREZ K;HYUN S K;TSUCHIYA H .Corrosion behavior of lotus-type porous high nitrogen nickel-free stainless steels[J].Corrosion Science,2008,50:183-193. |
| [8] | Takuji Nakahata;Hideo Nakajima .Fabrication of Lotus-Type Silver with Directional pores by Unidirectional Solidification in Oxygen Atmosphere[J].Materials transactions,2005(3):587-592. |
| [9] | Hideo Nakajima .Fabrication, properties and application of porous metals with directional pores[J].Progress in materials science,2007(7):1091-1173. |
| [10] | SIMONE A E;GIBSON L J .The compressive behavior of porous copper made by the GASAR process[J].Journal of Materials Science,1997,32:451-457. |
| [11] | Hyun SK.;Nakajima H. .Anisotropic compressive properties of porous copper produced by unidirectional solidification[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):258-264. |
| [12] | T. Ide;M. Tane;T. Ikeda .Compressive properties of lotus-type porous stainless steel[J].Journal of Materials Research,2006(1):185-193. |
| [13] | 刘新华,姚迪,刘雪峰,谢建新.藕状多孔铜沿垂直于气孔方向的压缩变形行为与本构关系[J].中国有色金属学报,2009(07):1237-1244. |
| [14] | 姚迪;刘新华;刘雪峰;谢建新 .藕状多孔纯铜轴向压缩变形行为与本构关系[J].中国有色金属学报,2009,19(11):1996-2001. |
| [15] | MASATAKA N;李安定.应力集中[M].北京:机械工业出版社,1976:269-280. |
| [16] | 崔忠圻.金属学及热处理[M].北京:机械工业出版社,2000:18. |
| [17] | 刘培生.多孔固体结构与性能[M].北京:清华大学出版社,2003:275-285. |
| [18] | GIBSON L J;ASHBY M F.Cellular solids[M].London:cambridge University Press,1997:16-21. |
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