Multi-phase-field modeling of microstructure evolution in metallic foams

TL;DR

This paper introduces a multi-phase-field model for metallic foam microstructure evolution, enabling control over bubble coalescence to simulate both closed and open porous structures in 2D and 3D.

Contribution

It presents a novel MPF-based approach with a no-coalescence boundary condition and a modified criterion for controlled coalescence, advancing foam microstructure modeling.

Findings

Successfully simulates closed foam microstructures in 2D and 3D.

Demonstrates controlled coalescence to generate open foam structures.

Validates the MPF model against expected microstructure features.

Abstract

This paper represents a model for microstructure formation in metallic foams based on the multi-phase-field (MPF) approach. By the use of a no-coalescence boundary condition within this MPF-framework, it is possible to completely prevent coalescence of bubbles and thus focus on the formation of a closed porous microstructure. A modification of this non-wetting criterion allows for the controlled initiation of coalescence and the evolution of open structures. The method is validated and used to simulate foam structure formation both in two and three dimensions.