材料工程2026，Vol.54Issue(2)：212-221,10.DOI:10.11868/j.issn.1001-4381.2025.000378
材料挤出成形多孔金属铝的工艺及性能研究
Process and properties of porous metal aluminum fabricated by material extrusion forming
摘要
Abstract
Porous metal aluminum,a low-density metallic foam with a porous structure,exhibits good energy absorption and sound absorption properties,leading to its wide application in fields such as machinery manufacturing and aerospace.Currently,the fabrication of porous aluminum primarily relies on physical or electrochemical methods,which often involve complex processes and high costs.This study employs a low-cost material extrusion forming technique to prepare porous metal aluminum,investigates its forming characteristics,and systematically examines the effects of aluminum-based slurry solid content,forming parameters,and sintering processes on the properties of the extruded porous metal aluminum,and the pore structure is optimized to prepare porous metal aluminum.The results show that when the solid content of the aluminum-based slurry is 80％(mass fraction),the desired billet can be extruded completely without collapse or depression.Using process parameters of a needle diameter of 0.34 mm,a layer height of 0.22 mm,and a filling rate of 50％to prepare the billet.The porous metal aluminum obtained by sintering at 650℃and holding for 150 min has good properties,with a flexural strength of 12.57 MPa,a porosity of 53.96％,and a shrinkage rate of 3.19％,meeting the performance requirements for porous metal aluminum.关键词
材料挤出成形/金属铝/多孔/强度Key words
material extrusion forming/metal aluminum/porous/strength分类
矿业与冶金引用本文复制引用
李杨帆,杨力,唐世艳,刘菁非,杨致远,徐子桢,蔡超,樊自田..材料挤出成形多孔金属铝的工艺及性能研究[J].材料工程,2026,54(2):212-221,10.基金项目
国家磁约束核聚变能发展研究专项(2022YFE03210400) （2022YFE03210400）
国家自然科学基金(52205365,52275334,52205359) （52205365,52275334,52205359）
湖北省博士后先锋人才跟踪支持项目(2024HBBHXF025) （2024HBBHXF025）
