Additive manufacturing of AISI 316L specimens with distributed inner bone-type cavities: processability and characterization

Abstract Bone lacunae are cavities the morphology of which strongly affects damage propagation inside bone. Nevertheless, role eventual variations in their morphological features is not clear yet. In this scenario, work aims at isolating effects lacunar-like pores on mechanical response 3D printed samples. The research presents a detailed study processability those by means laser powder bed fusion process, carefully considers both drawbacks such as need heat treatment to minimize residual stresses, and limitation design constraints, presence metallic powders trapped closed cavities. identification optimized permitted X-ray diffractometer analysis examinations optical micro-CT investigations selected performed tensile test samples with progress preliminary static characterization. Future developments will investigate fracture modality, under fatigue loadings comprehend how different influence propagation.