| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Linear Complexion Formation and their Effect on the Strength of Metallic Alloys |
| Author(s) |
Vladyslav Turlo, Timothy J Rupert |
| On-Site Speaker (Planned) |
Vladyslav Turlo |
| Abstract Scope |
Linear complexions are phase-like features that are thermodynamically stable only near dislocations and are analogous to grain boundary complexions (phase-like interfacial structures). In this talk, we discuss how different types of linear complexions can be formed at dislocations, with a special focus on structural materials and their mechanical properties. By using atomistic simulations, we first explore a large number of alloys at different compositions and temperatures to construct “linear complexion phase diagrams”, showing the appropriate conditions for complexion formation while also providing an information about their expected size and makeup. Next, we perform shear deformation simulations of the samples with nanoscale-size linear complexions and demonstrate that such complexions are able to significantly improve the strength of metallic alloys by pinning moving dislocations or modifying their local atomic structure. Taken as a whole, our findings allow for the possibility of a tunable alloy microstructure and properties, advancing the materials design toolbox. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |