About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Multi-Principal Element Alloys II
|
Presentation Title |
Phase Formation in Compositionally Complex Alloy Thin Films: The Role of "Small" and "Large" Elements |
Author(s) |
Andrea M. Hodge, Daniel Goodelman |
On-Site Speaker (Planned) |
Andrea M. Hodge |
Abstract Scope |
Discrepancies in phase formation between bulk and thin film studies for high entropy systems are attributed to growth mechanisms, grain size, process temperature, and rapid diffusion during synthesis. For example, film synthesis features rapid cooling rates, which can restrict diffusion and minimize the nucleation and growth of intermetallic compounds in comparison to bulk. In this context, we aim to highlight the effect of changing elemental compositions on the crystallography of sputtered compositionally complex alloys films. This technique allows for easily tunable conditions such as operating power, working pressure, and working gas among others that influence the composition of each of the alloying elements present. Results indicate that there is a transition from BCC to FCC to amorphous crystallographic structures when altering the composition of each of the alloying elements. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Characterization, Mechanical Properties |