泡沫铝镁合金的压缩与吸能性的研究  

Investigation on compressive behavior and energy absorbing property of Al-Mg alloy foams

作　　者：程和法[1] 黄笑梅[1] 许玲[2] 

机构地区：[1]合肥工业大学,安徽合肥230009 [2]安徽工程科技学院,安徽芜湖241000

出　　处：《兵器材料科学与工程》2002年第6期12-14,共3页Ordnance Material Science and Engineering

基　　金：安徽省教育局基金资助项目

摘　　要：对用渗流法制备的泡沫铝镁合金进行了准静态压缩实验 ,测试了其压缩应力—应变曲线 ,研究了泡沫铝镁合金的准静态压缩力学行为及其吸能性 ,并与泡沫纯铝的静态压缩性能进行了比较。实验结果表明 ,泡沫铝镁合金的压缩过程具有明显的三阶段变形特征 ,即弹性段、塑性平台段和压实段 ;随孔径的增加 ,泡沫铝镁合金的屈服强度升高、吸能量上升。由于铝镁合金的强度远高于纯铝 ,从而使泡沫铝镁合金的压缩屈服强度及吸能性均显著高于泡沫铝。Quasi-static compression tests of Al-Mg alloy foams were conducted and the compressive stress-strain curves were obtained. The quasi-static compressive deformation behavior and energy absorbing characteristic of Al-Mg alloy foams were investigated. The testing results showed three deformation regions : elasticity region,plastic plateau region and densification region exist in the compressive stress-strain curves of Al-Mg alloy foams, and along with the increase of pore size, the yield strength and energy absorbing ability of Al-Mg alloy foams increase, too. The yield strength of Al-Mg alloys is much higher than that of pure Al, as a result, both yield strength and energy absorbing ability of Al-Mg alloy foams are notably higher than those of pure Al foams.

关 键 词：泡沫铝镁合金 冲击缓冲材料 孔径 压缩性能 吸能性 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG1[金属学及工艺—金属材料]