Abstract
A multiphase-field model has been developed in order to study the evolution of micropores constrained to grow in a solid network, with a so-called pinching effect. The model accounts for the pressure difference due to capillarity between liquid and gas, the equilibrium condition at triple (solid-liquid-pore) lines, the partitioning and diffusion of dissolved gases such as hydrogen in aluminum alloys. The model is used to study the growth of a pore in a solid network, reconstructed from X-ray tomography observations. It was observed that such calculations can help to better understand the experimental observations, which have a limited temporal and spatial resolution. The predicted morphology is also compared with the experimental observation.
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