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

TL;DR

This paper introduces a high-fidelity level-set modeling framework for simulating diffusive solid-state phase transformations in polycrystalline materials, integrating thermodynamic data and advanced nucleation models for improved microstructure prediction.

Contribution

It presents a novel, comprehensive level-set approach that couples with ThermoCalc and includes new techniques for large-scale microstructural representation and multiphase modeling.

Findings

Effective modeling of multiphase polycrystalline microstructures

Real-time thermodynamic data integration with ThermoCalc

Application to ternary alloys with solute drag and nucleation models

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.