| Abstract Scope |
Bimetallic structures are composed of joining two different metals and taking advantages of both of their properties such as mechanical, electrical, and thermo-physical. Welding techniques are the most common methods of joining two types of metals. However, such approaches may cause defects which may lead to failure. Some metals are incompatible for welding due to formation of intermetallic phases, significant differences in melting temperature, and thermal expansion coefficients. With the inspiration of additive manufacturing, it is highly possible to directly 3D-print a bimetallic structure through metal additive manufacturing techniques to overcome the issues caused by conventional welding. In this study, multiple bimetallic compositions such as Ti6Al4V-Al12Si, SS316-Al12Si, Inconel 718-Cu alloys, and Inconel 718-Ti6Al4V were fabricated via Laser Engineered Net Shaping (LENS<sup>TM</sup>) to test manufacturing feasibility. In addition, different techniques such as compositionally graded transition and bonding layer were utilized. Moreover, microstructures, phase analysis, and mechanical properties were also studied. |