Influence of the Manufacturing Process and Dynamic Testing on the Residual Stress State of Additively Manufactured Ti-6Al-4V Lattice Structure Specimens

With time, the benefits of additive manufacturing have become firmly established in the domain of medical technology. The high degree of design freedom and precision afforded by additive manufacturing enables the production of implant components that are precisely tailored to individual requirements and based on patient-specific data. In addition to the advantages, the production of such components presents process-related material science challenges. One such challenge of this manufacturing process is the residual stresses due to the occurring phase transformation during the rapid process-related cooling rates. These stresses can lead to component deformation and impair the mechanical load-bearing capacity of the component, leading to accelerated fatigue. This aim of this study is to analyse the various influences of manufacturing and machining processes such as heat-treatment or application-related stress on the residual stress state of additively manufactured components based on titanium alloys.