About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VI
|
Presentation Title |
The Role of Thin Film Architecture to Enhance Fracture Resistance |
Author(s) |
Megan J. Cordill |
On-Site Speaker (Planned) |
Megan J. Cordill |
Abstract Scope |
Multilayers on polymer substrates are of interest for several technical applications. The true understanding of how one layer affects the other during mechanical loading is still unknown. Therefore, single and bilayer thin films of Al and Mo were sputter deposited onto polyimide and biaxially strained in-situ with X-ray diffraction. The technique allows for the simultaneous measurement of lattice strains of Al and Mo to correlate the observed mechanical behavior of both materials. Using the evaluated film stress and FWHM evolutions, four domains of mechanical behavior are identified. The presence of the domains depends on the thickness of the Al films and, more importantly, the bilayer architecture. The maximum stress achieved in the Mo layers was also found to highly depend on the architecture and depend less on the Al film thickness. Results will demonstrate that the film architecture is more important than the film thickness to enhance fracture resistance. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Mechanical Properties, Other |