Additive Manufacturing (AM) has emerged as a method for producing metal components that combine intricate geometries with tailored engineered microstructures. Among the AM approaches, Laser Powder Bed Fusion (LPBF) has been proven effective for fabricating high-density Aluminum (Al) alloys. Yet, it faces challenges due to Al's high reflectivity, its tendency to oxidize, and the thermal stresses that can complicate the processability of Al-based alloys. To overcome these challenges, the incorporation of nanoscale reinforcements has recently attracted interest. This thesis examines the manufacturing and characterization of AlSi10Mg reinforced with Graphene Nanoplatelets (GNPs) via LPBF, explicitly focusing on the mechanical properties and microstructural quality of AlSi10Mg compared to AlSi10Mg-GNPs nanocomposites.