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arXiv · 2405.12995

High-fidelity level-set modeling of diffusive solid-state phase transformations for polycrystalline materials

Nitish Chandrappa·Marc Bernacki
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Abstract

The formation of microstructures in metallic alloys during hot metal forming involves simultaneous metallurgical complex phenomena. Traditional high-fidelity numerical frameworks used on the polycrystalline scale tend to focus on single-phase microstructures or isolate phase transformations from grain boundary migration mechanisms. The level-set method is highlighted as effective in proposing a global framework for modeling multiphase polycrystalline materials and diffusive solid-state phase transformations. This framework includes novel techniques for efficient large-scale microstructural representation, strong coupling with ThermoCalc software for real-time thermodynamic data, application for ternary alloys and beyond by taking solute drag aspects, and the use of advanced nucleation models. Numerous applications are then illustrated.

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Nitish Chandrappa, Marc Bernacki. 2024-05-01. High-fidelity level-set modeling of diffusive solid-state phase transformations for polycrystalline materials. https://arxiv.org/abs/2405.12995

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