Multi-material additive manufacturing (AM) possess enormous potential to extend the design space beyond complex geometries. In particular, the ability to manufacture parts from multiple materials using AM technologies enables optimization of the mechanical properties of the parts or/and to provide additional functions for the final parts. Different materials combinations, including materials from different classes (e.g., metal-polymer, ceramic-metal, etc.) and various AM technologies, have already been explored to create customized multi-functional objects to suit many needs.
In this study, a multi-material composed of a CuZr-based metallic glass and conventional titanium alloy was synthesized by laser powder bed fusion (LPBF). Metallic glasses (MG) are amorphous materials characterised by glass transition. These feature outstanding strength but extremely limited tensile plasticity. Commercial titanium-based alloys are typically very tough and can affectively arrest crack propagation. At the interface of this multi-material two materials mix forming new phases affecting the performance of the multi-material. The interface of the multi-material has been studied in details. The resulting bimetallic composite can be used as a promising material for various applications requiring high strength and toughness along with an excellent corrosion resistance.