|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Nanocomposites V: Structure-Property Relationships in Nanostructured Materials
||In Situ Deformation Characteristics of a Free-standing Three-dimensional Graphene Foam-aluminum Nanohybrid
||Pranjal Nautiyal, Mubarak Mujawar, Benjamin Boesl, Arvind Agarwal
|On-Site Speaker (Planned)
A 3D graphene foam consisting of an interconnected network of nodes and branches is utilized for developing damage-resistant and flexible metal-based nanohybrid. Aluminum is deposited on graphene foam by electron-beam evaporation. Deformation mechanisms in this Al-graphene foam hybrid are examined by in situ mechanical testing inside a scanning electron microscope for real-time visualization. In situ nanoindentation reveals bending and flexing of graphene foam branches when subjected to mechanical force, which tend to revert to their original configuration after unloading. The 3D network enables effective stress distribution to the adjacent branches, preventing the localized failure of material under applied loads. The foam branches are found to be stretchable under in situ tensile loading. A combination of graphene’s superior strength and Aluminum’s ductility result in a flexible and robust 3D material with applications as lightweight structural components in aircraft and automobiles, vibration damping systems, precision devices, robotic components, MEMS/NEMS devices etc.
||Planned: Supplemental Proceedings volume