||Until recently, the arguments favoring additive manufacturing (AM) techniques have largely been 1) the ability to build complex parts that cannot be achieved with conventional processes, 2) the reduction of the number of parts in a complex assembly to avoid issues associated with welding and joining, 3) a reduction in cost, and 4) a reduction of materials waste. In this context, alloys that have been considered have almost exclusively been those developed for standard manufacturing processes, such as conventional steels (i.e., 316L stainless steel), aluminum alloys such those based on Al-Cu-Mg-Sc-Si, Ni-Cr–based superalloys (Inconel 718/625), and titanium alloys (largely Ti-6Al-4V). Challenges associated with achieving controllable microstructures and properties in these technically relevant alloys leads to a pertinent question: Is there a need to develop new materials feedstocks that are better suited to take advantage of AM processes and their parameters? It is anticipated that growth in materials diversity will soon drive the progress of AM. New alloys for structural and biomedical applications, high-strength and high-radiation-resistant alloys, and hierarchically graded materials, among others, have begun to generate interest.
This symposium will highlight recent advances in the design and optimization of new alloy feedstock materials for AM. Presentations are sought that illustrate paths toward broadening the design space to include new, innovative materials, including but not limited to:
* Experiments that explore a broader alloy design space, including powder development and microstructural assessments
* Combinatorial experimental approaches for materials design and optimization
* Computational methods for design of alloys with improved properties
* Experiments and simulations that aid in understanding the role of physical properties on alloy design
* Advanced characterization techniques that provide insight for materials design