| Abstract Scope |
Nanotwinned (NT) Inconel alloys were synthesized via magnetron sputtering and underwent an aging treatment that induced a transformation from a highly NT structure to a heterogeneous nanostructured material (HNM) with a unique and complex gradient grain topology. The heterogeneous microstructure contains domains consisting of columnar NTs, nano-grains, and abnormally large grains with diameters greater than 1 µm, which represents a material with a wide range of grain sizes and morphologies. Three distinct domains with variable grain size, precipitate formation, and morphologies will be discussed, including a NT region, a nanocrystalline structure, and an abnormal recrystallization region where rafted structures, M23C6, and δ precipitates were observed. In this presentation, the interactions within the HNMs regions and their impact on deformation behavior across the film thickness are explored via various deformation modes. Understanding the deformation behavior of these HNMs contributes to discovering optimal design and fabrication strategies for enhancing their mechanical behavior. |