| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XVIII
|
| Presentation Title |
Synthesis of Bulk Metallic Glass-alumina Composites with Intertwined Dendritic Structure |
| Author(s) |
Je In Lee, Amy Wat, Chae Woo Ryu, Jinyeon Kim, Eun Soo Park, Robert Ritchie |
| On-Site Speaker (Planned) |
Je In Lee |
| Abstract Scope |
Bulk metallic glasses (BMGs) have been of significant interest as potential structural materials due to their high strength and large elastic strains. Zr-based BMGs exhibit excellent wettability with conventional ceramics, which indicates that BMGs are suited for filler materials to produce metal-ceramic hybrid materials with hierarchical architecture. In this study, we utilize the dendritic growth of ice crystals in a thermal gradient to assemble an alumina with dendritic pore architecture, which is then infiltrated with glass-forming alloy melt to make a bioinspired, micrometer-scale, intertwined BMG-alumina composite. The microstructures of the composites, prepared at various infiltration temperatures, are examined to show how the chemical reaction between the BMG-forming melt and alumina affects the interfacial bonding between the constituents. The BMG composite exhibits ultra-high strength with exceptional relative compressive strength, far better than ceramic particulate BMG composites. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, |