by Mohamed H. Mourad, Mahmoud Ahmed El-Sayed, Eman Elnabawy, Abdulrahman Obaid, Islam Shyha
Abstract
Selective Laser Melting (SLM) is a prominent additive manufacturing (AM) technique capable of constructing fully dense products directly from a CAD design by incrementally adding layers. This technology enables the fabrication of intricate metallic components of varying sizes. However, its widespread application is hindered by the suboptimal surface quality of the produced items and the significant influence of component density on mechanical properties. This study employs Design of Experiments (DoE) and Analysis of Variance (ANOVA) methodologies to investigate the impact of key process parameters—laser power, scan speed, and hatch spacing—on the porosity and surface roughness of Ti6Al4V SLM components. The results demonstrate that the interaction among laser process parameters significantly affects both density and surface finish. An optimization study suggests that utilizing laser power, velocity, and spacing at 50 W, 331 mm/s, and 45 μm, respectively, would yield Ti6Al4V components with optimal density and surface quality. These findings contribute to enhancing the understanding of process parameter effects on SLM-produced parts and offer insights for optimizing the fabrication of high-quality metallic components using SLM technology.
Video presentation
Presenting author
| Name: Affiliation: Email: | Mahmoud Ahmed Elsayed Arab Academy for Science and Technology and Maritime Transport, Egypt drmahmoudelsayed12@gmail.com | |
