About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanocomposites VI: Nanoscience and Nanotechnology in Advanced Composites
|
| Presentation Title |
In-situ Mechanical Tests of Aluminum-carbon Nanotubes Composite Under Transmission Electron Microscopy |
| Author(s) |
Kangpyo So, Michael Short, Ju Li, Sidney Yip |
| On-Site Speaker (Planned) |
Kangpyo So |
| Abstract Scope |
One-dimensional carbon nanotubes (CNT), which are mechanically strong and flexible, enhance the strength of the host metal matrix. However, the underlying strengthening/fracturing mechanism at the nanoscale is not clear. Here, we report a numerical analysis of the strengthening mechanism of CNT in aluminum along with the in-situ experimental observation. Nanoscale plasticity and rupturing processes near CNTs were observed by in-situ mechanical tests inside a Transmission Electron Microscope (TEM). The fracturing entails notch evoluation, surface strain, atomic sliding, dislocation gliding/climbing and local shear response. The notch in nanoscale was pinned due to the high mechanical strength of CNT. Further molercular details of 1D nano-dispersion hardening due to CNTs will be discussed. |
| Proceedings Inclusion? |
Planned: |