| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale V
|
| Presentation Title |
Characterizing Near-surface Plasticity in Aluminum-carbon Hybrid Materials |
| Author(s) |
Christopher Shumeyko, Andrew Palughi, Daniel Cole, Christopher Klingshirn, Xiaioxiao Ge, Lourdes Salamanca-Riba, Madeline Morales |
| On-Site Speaker (Planned) |
Madeline Morales |
| Abstract Scope |
Covetic nanomaterials, a form of metal-matrix nanocarbon composite (MMCs) produced via a single-step electrocharge-assisted process, have been shown to exhibit increased mechanical and electrical properties over parent alloys. This process has been demonstrated with a wide variety of metals, with a recent focus on Al and Cu for aerospace and power transmission applications. However, scalability and consistency issues with the process limit its widespread adoption and drive the need for a fundamental understanding of process-structure-property relationships. Here, we couple atomistic simulations to experimental characterization to identify the role of the carbon nanophase on early stage plasticity in covetics. Nanoindentation is performed on regions of interest and studied via TEM and Raman to reveal the effect of graphitic structures on microstructure and dislocation density. Concurrently, MD and DFT simulations probe the influence of metal-carbon interfaces and bonding on mechanical behavior. Information gleaned will lead to process control for higher performing MMCs. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |