| Abstract Scope |
This lecture will discuss the transformative potential of additive manufacturing, specifically focusing on directed energy deposition (DED) additive manufacturing for the development of functionally integrated materials (FIMs) with site-specific functionality. We will highlight the importance of the powder injection delivery system, which allows for the sequential and/or co-deposition of multiple feedstock powders.
Stainless steel 316L with Haynes 282 nickel superalloy and nickel with nickel-aluminum, will be examined to illustrate the concept of FIMs, including microstructure, interfaces, diffusion zones, grain boundary morphology and texture, chemical composition, and phase transformations. In-situ imaging techniques, including thermal imaging and high-speed video, will shed light on these complex interactions, using examples such as nickel superalloy powder and TiC reinforcement particles.
Finally, the lecture will consider the advantages of utilizing recycled and repurposed alternative feedstock materials, providing a comprehensive understanding of the diverse aspects of additive manufacturing that can contribute to transformative materials and engineering design. |