| Abstract Scope |
Additive manufacturing (AM) of high-strength aluminum alloys faces significant challenges due to rapid melting and solidification, leading to brittleness from excessive intermetallics and reduced ductility under tensile stress at elevated temperatures. To overcome these limitations, we explore novel alloying strategies by introducing elements such as Ti, Zr, Ni, Sc, Mn, and Ce into the aluminum matrix. Utilizing density functional theory (DFT) and molecular dynamics (MD) modeling, we investigate how targeted alloying can stabilize intermetallic phases, prevent coarsening, and refine microstructures to enhance tensile ductility. By forming thermally stable, nanoscale precipitates and optimizing the balance between soft and hard phases, we aim to reduce brittleness and improve deformability without compromising strength. This research provides a computational framework for designing aluminum alloys capable of withstanding the thermal and mechanical demands of high temperature AM applications. |