Design and Applications of Additively Manufactured Porous Aluminum Alloys

Abstract

Additive manufacturing (AM) technology enables to manufacture many types of porous aluminum alloys. Present study focusses on AM porous Al4.8Mg0.7Sc alloys manufactured through laser powder bed fusion process. Eight types of ordered cell structures are designed by 3D-Voronoi division. AM porous Al4.8Mg0.7Sc alloys consisting of ordered cells show anisotropic compression behavior. Oscillated stress-strain curves are due to the heterogeneous deformation of cell struts. Post-annealed AM porous Al4.8Mg0.7Sc alloy shows excellent mechanical properties compared to post-annealed AM porous Al10Si0.3Mg alloy. This is because of solid solution hardening in Al4.8Mg0.7Sc alloy.