About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
A Phase Field Approach to Study Precipitate Migration under Temperature Gradient |
Author(s) |
Sandip Guin, Soumya Bandyopadhyay, Saswata Bhattacharya, Rajdip Mukherjee |
On-Site Speaker (Planned) |
Sandip Guin |
Abstract Scope |
Thermomigration is a phenomenon where atoms migrate under a temperature gradient. It has been a matter of interest to study the effect of thermomigration on microstructure evolution in the scientific community for the last few decades. In the present work, we rigorously explore the thermodynamics and kinetics of precipitates subjected to a thermal gradient using a novel phase-field approach. We systematically study the thermomigration behavior for single and multiple
precipitate systems by varying the shape of the precipitates and
inter-precipitate distance. We begin with an infinite strip-like
precipitate with flat interfaces to avoid curvature effects. It allows us to validate our phase-field model to
analytically obtained results. It is followed by a study on circular
precipitates taking into account the impact of curvature. We observe that
the precpitate migration velocity depends on the size of the precipitate.
Further, our study on multi-precipitate systems elucidates the concurrent
thermomigration and coarsening phenomena. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Phase Transformations, Other |