| Abstract Scope |
Additive manufacturing of metallic alloys is a disruptive technology that can produce net-shape components with nearly unlimited geometrical complexity and customization. This technology also brings an opportunity to design new and modified alloys based on robust understanding of phase equilibria and kinetics so that the dependent process variables are desensitized and thermo-kinetic environments associated with additive manufacturing are utilized effectively. In this presentation, experimental research efforts using gas atomization and laser powder bed fusion for metallic alloy development will be first introduced. Selected observations of microstructural development from solidification, micro-segregation, homogenization, and precipitation will be highlighted for additively manufactured Al-, Ni-, and Fe-base alloys, both commercially available and new/modified compositions. Use of computational methods in designing and modifying the alloy composition for printability/buildability and properties/performance will be presented to identify the critical development needs for methods and databases for both thermodynamics and kinetics. |