| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics and Kinetics of Alloys III
|
| Presentation Title |
Coupled experimental-computational study of phase transformations in Fe-Cr-Mo-Co-Ni
dual-anneal diffusion multiples |
| Author(s) |
Jessica Garnett, Ji-Cheng Zhao |
| On-Site Speaker (Planned) |
Jessica Garnett |
| Abstract Scope |
Dual-anneal diffusion multiples (DADMs) were annealed at a high temperature (1200 °C) to create wide ranges (gradients) of compositions and then followed by a second anneal at lower temperatures to induce phase transformations from supersaturated solid solutions. DADMs provide unprecedented efficiency in collecting the phase transformation data on the types (phases) and morphology (size and distribution) of the various competing precipitates as a function of time, temperature and composition. The experimental results are then compared with the results of thermodynamic and kinetic simulations using CALPHAD software Thermo-Calc in an iterative fashion. Quantities such as interfacial energy are adjusted to match the TC-PRISMA simulation results with experimental data. Sequential precipitations of metastable phase to more stable phases were observed experimentally in the Fe-Cr-Mo bcc solid solution and modelled using TC-PRISMA. Our coupled experimental-computational study illustrates the ability of computational thermodynamics and kinetics in simulating complex sequential phase precipitation kinetics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Modeling and Simulation, Computational Materials Science & Engineering |