2016 | OriginalPaper | Chapter
Modeling of Microstructure Evolution During Alloy Solidification
Authors : Mingfang Zhu, Shiyan Pan, Dongke Sun
Published in: Advances in the Science and Engineering of Casting Solidification
Publisher: Springer International Publishing
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In recent years, considerable advances have been achieved in the numerical modeling of microstructure evolution during solidification. This paper presents the models based on the cellular automaton (CA) technique and lattice Boltzmann method (LBM), which can reproduce a wide variety of solidification microstructure features observed experimentally with an acceptable computational efficiency. The capabilities of the models are addressed by presenting representative examples encompassing a broad variety of issues, such as the evolution of dendritic structure and microsegregation in two and three dimensions, dendritic growth in the presence of convection, divorced eutectic solidification of spheroidal graphite irons, and gas porosity formation. The simulations offer insights into the underlying physics of microstructure formation during alloy solidification.