Metals
Effects of Lattice Architecture, Nominal Feature Size and Heat Treatment on the Tensile Behavior of L-PBF-Fabricated Inconel 718 Lattice Structures
Laser powder bed fusion (L-PBF)-fabricated Inconel 718 lattice structures offer considerable potential for lightweight load-bearing applications, but their mechanical integrity depends on architecture, geometric scale, manufacturing defects, and post-processing condition. This study examined the combined effects of Diamond, Gyroid, and Octet architectures, nominal feature sizes of 1.0, 1.25, and 1.5 mm, and four heat-treatment conditions on tensile behavior and fracture characteristics. The specimens were evaluated …