About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Bulk Metallic Glasses XVII
|
Presentation Title |
Nanoscale Heterogeneity on Mechanical Performance of
Cu-Zr-Al Thin Film Metallic Glasses |
Author(s) |
Xiao Han, Yucong Gu, Feng Yan, Lin Li |
On-Site Speaker (Planned) |
Xiao Han |
Abstract Scope |
The influence of nanoscale heterogeneity on the mechanical behaviors of metallic glasses is investigated by combining experimental and modeling approaches. Specifically, we deposited Cu46Zr46Al8 thin film metallic glasses (TFMGs) with different thicknesses by direct current magnetron sputtering method. Dynamic Force Microscope (DFM) revealed the nanoscale mechanical heterogeneity that could be linked to structural and chemical heterogeneities in these TFMGs. The modulus and hardness were further measured by nanoindentation. A mechanistic understanding between the nanoscale variation and mechanical properties is provided by a mesoscale shear transformation zone dynamics model. Such thickness dependent property variation can potentially be used to tailor the TFMGs for multifunctional applications. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |