4.7 Article

Multi-GPU implementation of a cellular automaton model for dendritic growth of binary alloy

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Summary: A 2-D multi-component and multi-phase cellular automaton model coupled with the Calphad method and finite difference method was proposed to simulate gas pore formation and microstructures in the solidification process of hypoeutectic Al-Si-Mg alloys. The model can reproduce interactions between hydrogen microporosity formation, growth of dendrites and eutectics, and competitive growth among gas pores of different sizes. Investigating the influences of initial hydrogen concentration and cooling rate, it was found that the main portion of porosity formation occurs in the eutectic solidification stage.

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