About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
The Role of Interface Strength and Plastic Anisotropy on the Deformation Behavior of Fe-Al and Ti-Al Nanolaminates |
| Author(s) |
Thomas J. Nizolek, Yifan Zhang, Emma Gordon, Hi Vo, Miroslav Zecevic, Rodney McCabe |
| On-Site Speaker (Planned) |
Thomas J. Nizolek |
| Abstract Scope |
While the majority of nanolaminate composites prepared using accumulative roll bonding (ARB) are comprised of immiscible phases (e.g., Cu-Nb, Cu-Fe, Ag-Fe, etc.), we have recently developed an ARB procedure that allows bulk nanolaminates to be created from reactive, intermetallic forming systems (Ti-Al and Fe-Al) that have a large negative heat of mixing. Here we use micropillar compression tests coupled with electron microscopy techniques to assess flow strength anisotropy, deformation behavior, and interface shear strength of Ti-Al and Fe-Al nanolaminates. Our results demonstrate that the interface shear strengths of these nanolaminates are significantly higher than those observed in immiscible systems (Fe-Cu and Fe-Ag), and that these strong interfaces impart both high strength (e.g. ~2 GPa for 50nm Fe-Al) and improved flow stability during compression parallel and perpendicular to the nanolamellar structure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Thin Films and Interfaces, Other |