Additive manufacturing also known as 3D printing is an emerging technology as it has great potential in a large variety of applications in aerospace, biomedical and automotive industry. Additive manufacturing enables the production of complicated designs, lightweight structures and novel functional features by joining materials in a layer by layer fashion to make the objects from 3D models. Nowadays there are various technologies which can implement AM using different kinds of materials, such as Powder Bed Fusion (PBF) which includes, selective laser sintering (SLS) and Electron Beam Melting (EBM). With the rapid development of AM, more complex structures with more materials can be fabricated.