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.

在开放文献中发表的有关消融铸造的研究主要是实验性的。这种创新技术的模型很少。本文介绍了对消融铸造过程进行建模的初步尝试。定义了材料特性和边界条件，以计算使用砂型铸造和烧蚀铸造工艺制造的A356合金铸件的冷却曲线和显微组织长度尺度。将模型预测结果与已发布的有关A356合金铸件中的冷却曲线和凝固时间的数据进行了比较。然后将经过验证的模型用于预测与消融铸造工艺相关的独特凝固特征，包括共晶凝固时间，收缩孔隙形成，共晶前沿形态，共晶前沿的前进速率以及相关的共晶硅形态。