Additive Manufacturing (AM) has broken through to common awareness as the future of manufacturing industry. Its peculiarity and innovation is the possibility to create parts starting from a 3D CAD model only by the addition of material, stacking up layers, contrasting with the "traditional" forming process by removing material, such as machining. This leads to a new freedom in the design process, gaining access to more complex shapes and geometries than before. As this technology advanced, a wider variety of materials were available to be involved in AM processes, but the turning point which made this technology really attractive for industrial purposes has been the possibility of using metal alloys as raw material.