About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Algorithms Development in Materials Science and Engineering
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Presentation Title |
Comparative Study of Chemical Short Range Order Structure Construction in Multi-Principal Element Alloys |
Author(s) |
Subah Mubassira, Cliff Hirt, Shuozhi Xu |
On-Site Speaker (Planned) |
Subah Mubassira |
Abstract Scope |
Multi-principal element alloys (MPEAs) are excellent in strength, fracture toughness, and flexibility, making them ideal for high-temperature applications. In this study, we investigate two widely used methods for constructing the chemical short-range order (CSRO) structure of MPEAs: the NPT method and SGC method. The SGC approach first uses hybrid molecular dynamic (MD)/Monte Carlo (MC) simulations in a semi-grand canonical (SGC) ensemble to calculate chemical potential differences. The CSRO structure is then produced by a variance-constrained SGC simulation. Whereas, the NPT approach uses a hybrid MD/MC simulation where different species are swapped in an isothermal-isobaric (NPT) ensemble until the system energy converges. The SGC technique is faster, but it is difficult to determine changes in chemical potential; the NPT approach is more straightforward but is computationally expensive. Our extensive study provides a detailed comparison of the two approaches, highlighting their advantages and limitations. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, |