Dynamic Mechanical Behavior of Additively Manufactured Ti6Al4V With Controlled Voids

Abstract

The mechanical properties of additively manufactured (AM) dense and porous Ti6Al4V specimens were investigated under static and dynamic compression. The fully dense specimens were fabricated using laser melting process. The porous specimens contained spherical pores with full control on the geometry and location of the pores. The laser processed dense material exhibited superior strength in the static and dynamic tests, compared to the same conventional material, but the ductility of the two was comparable. Single pore specimens exhibited a linear relationship between the load and the pore volume fraction. The comparison between single- and double-pore specimens, at identical volume fractions, revealed the importance of the pores' orientation with respect to the applied load.