About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Martensitic Transformation in Superlattices of Two Non-transforming Materials |
Author(s) |
Shivam Tripathi, Michael S. Titus, Alejandro Strachan |
On-Site Speaker (Planned) |
Shivam Tripathi |
Abstract Scope |
Significant number of studies have shown that the coherent integration of the second non-transforming phase in base martensitic material results in unprecedented thermo-mechanical properties. Here, we show the possibility of martensitic transformation by combining two non-transforming material (Mg-Li/Mg) for the first time to the best of our knowledge. We found that the transformation is similar to Mg-Sc alloys, resulting in finite temperature shape memory behavior. Our DFT simulations predict the martensite phase to be 9.3 meV/atom lower in energy than austenite for a 50-50 at.% MgLi/Mg nanolaminate. This energy difference can further be tuned between 4.8 meV/atom and 16.4 meV/atom by varying the fraction of pure Mg in these nanolaminates. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Modeling and Simulation, Other |