开孔泡沫铝的压缩与吸能性的研究  

A Study on Compression of Porous Foamed Aluminium and Its Energy-absorbing Performance

作　　者：程和法[1] 黄笑梅 许玲[2] 魏建宁 韩福生[3] 

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 [3]中科院固体物理研究所,安徽合肥230031

出　　处：《矿冶工程》2003年第1期70-72,共3页Mining and Metallurgical Engineering

基　　金：安徽省教育厅自然科学基金资助项目 (2 0 0 1Kj0 4 2 )

摘　　要：对渗流法制备的开孔结构泡沫铝进行准静态压缩实验 ,测试了其压缩应力 应变曲线 ,研究了开孔泡沫铝的准静态压缩力学行为及其吸能性。实验结果表明 :开孔泡沫铝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 ,并且在塑性段呈现出明显的应变强化现象 ;随泡沫铝孔径的增加 ,屈服强度上升 。A test is carried out for quasi-static compression of porous foamed aluminium, which is prepared by the infiltration process; its compressive stress-strain curves are determined, and its mechanical behaviour and energy-absorbing performance of quasi-static compression are studied. The testing results show that three deforming regions such as elasticity region, plastic collapsing region and densification region, are observed in the compressive stress-strain curves of porous foamed aluminium. Specially, distinct strain hardening occurs in the plastic collapse region. With increasing of its apertures, its yielding strength and energy-absorbing performance increase, whereas its energy-absorbing efficiency remains constant, approximately.

关 键 词：开孔泡沫铝 孔径 压缩性能 吸能性 渗流法 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG249.9[金属学及工艺—金属材料]