球形孔泡沫纯铝准静态压缩性能  

Quasi-static compressive property of spherical pores Al foam

作　　者：王展光[1] 徐玉红[2] 何德坪[3] 

机构地区：[1]井冈山大学工学院,江西吉安343009 [2]九江学院机械工程学院,江西九江332005 [3]东南大学材料科学与工程学院,江苏南京210096

出　　处：《兵器材料科学与工程》2008年第4期15-19,共5页Ordnance Material Science and Engineering

基　　金：国家重点基础研究发展计划(2006CB601201);国家自然科学重点基金(No50231010);面上基金(No50471031);(No50081002);(No19982001)

摘　　要：在球形孔泡沫纯铝压缩应力应变曲线基础上,研究了压缩强度、吸能能力,结果表明:球形孔泡沫纯铝与球形孔泡沫铝合金的压缩应力应变曲线相似,分为三个部分:线弹性阶段、平台阶段和密实阶段;球形孔泡沫纯铝相对于球形孔泡沫铝合金是一种吸能能力更强的、韧性性能良好的新材料。采用Gibson-Ashby的模型来分析球形孔泡沫纯铝的压缩屈服强度,吻合良好。Based on compression curves of spherical pores Al foam, compressive yield strength and energy absorption had been investigated. The compressive stress-strain curve of cellular Al alloy is almost the same with that of spherical pores Al foam, which consists of three distinct regions, i.e., the linear elasticity region, the plastic collapse region or brittle crushing region, and the densification region. Spherical pores Al foam is a cellular metal material of high plastic performance, so energy absorption capability of it is bigger than that of spherical pores Al alloy foam. Compressive yield stress was in good agreement with Gibson- Ashby model＇s expectation.

关 键 词：球形孔泡沫纯铝 压缩屈服强度 吸能能力 

分 类 号：TG146[一般工业技术—材料科学与工程]