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Modeling Ablation Casting

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Abstract

Research published in open literature on ablation casting has been mainly experimental. Modeling of this innovative technology is scarce. This article describes an initial attempt in modeling ablation casting process. Material properties and boundary conditions were defined for calculating cooling curves and microstructural length scales in A356 alloy castings made using sand casting and ablation casting processes. Model predictions were compared with published data on cooling curves and solidification times in an A356 alloy casting. The validated model was then used to predict unique solidification features associated with the ablation casting process, including the eutectic solidification time, shrinkage porosity formation, eutectic front morphology, the advancing rates of the eutectic front and the associated eutectic silicon morphology. Simulation results indicate that the progressive advancing ablation cooling is capable of reducing secondary dendrite arm spacing, modifying the eutectic silicon phase owing to the water quench effect, and eliminating shrinkage porosity using much smaller risers than usual if the ablation is correctly driven towards the risers.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China

    Dashan Sui

  2. School of Engineering Technology (Retired), Purdue University, West Lafayette, IN, 47906, USA

    Qingyou Han

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  1. Dashan Sui
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  2. Qingyou Han
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Correspondence to Dashan Sui.

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Sui, D., Han, Q. Modeling Ablation Casting. Inter Metalcast 16, 132–142 (2022). https://doi.org/10.1007/s40962-021-00603-w

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