About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
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Presentation Title |
J-5: Modeling the Precipitation of Ni4Ti3 in Near-equiatomic NiTi Alloys |
Author(s) |
Raymond Neuberger |
On-Site Speaker (Planned) |
Raymond Neuberger |
Abstract Scope |
A novel model for the precipitation of Ni4Ti3 is presented, built upon the recently released open-source precipitation model Kawin. Modeling the growth and behavior of Ni4Ti3 is a technologically significant problem due to the depleting effect the Ni-rich precipitates have on free nickel in the matrix, which in turn dramatically affects the martensitic transformation temperature. As such, heat treating NiTi to produce precipitates is an important tool in controlling the shape-memory effect. Kawin is an implementation of the Kampmann-Wagner Numerical (KWN) model and provides a computationally cheap means of calculating the evolution of a precipitate size distribution in a bulk material. Kawin has been adapted to accommodate the unique behavior of the NiTi precipitation system and calibrated against experimental data. The development of such a model, capable of cheap high-throughput simulations, is an important step towards process design for shape-memory alloys with finely tuned transformation temperatures. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Phase Transformations |