航空材料学报2017，Vol.37Issue(2)：55-62,8.DOI:10.11868/j.issn.1005-5053.2016.000117
填加造孔剂法制备泡沫铝及其吸能性能
Fabrication of Aluminum Foam by Space-holder Method and the Energy Absorption Properties
摘要
Abstract
Aluminum foam was fabricated by space-holder method with carbamide particles as space-holder material.The effects of forming temperature,porosity and diameter of pores were investigated systematically.During this process,the electronic universal testing machine combined with digital image correlation (DIC) technique was used to test the properties.The results show that the porosity and diameter of pores can be well controlled by space-holder method.The best sintering temperature of forming Al foam is 650 ℃.Under this sintering temperature,the compressive yield strength reaches 10.7 MPa.With the decrease of pore porosity,both of the compressive yield strength and platform stress increase,so the energy absorption of foam is improved remarkably.When the diameter of pores is below 2.0 mm,the energy absorption of foam is improved slightly with the increase of Al foam diameter.DIC technology can be used directly to characterize the mechanical behavior of foam material,which has a good engineering application prospect.关键词
泡沫铝/粉末冶金/吸能/DIC技术Key words
Al foam/powder metallurgy/energy absorption/DIC technique分类
矿业与冶金引用本文复制引用
杨旭东,石建,程洁,陈亚军,王付胜..填加造孔剂法制备泡沫铝及其吸能性能[J].航空材料学报,2017,37(2):55-62,8.基金项目
国家自然科学基金(51301198) （51301198）
中国民航大学科研启动基金(2012QD14) （2012QD14）
