Solidification simulations were carried out for casting aluminum alloy A356 using PanSolidification module of Pandat software which enables consideration of back diffusion in the solid during solidification. The casting microstructure features including the solidified phases, phase fractions, and secondary dendrite arm spacing (SDAS) were simulated. The simulated results explain the experimental observations reasonably well. High throughput calculation was performed to understand the effects of alloy composition and cooling rate on the formation of the intermetallic phases and SDAS in the casting microstructure. The role of Mn in eliminating the formation of detrimental β-AlFeSi phase was also simulated and discussed.

中文翻译：

---

成分和冷却速率对铸造铝合金凝固路径影响的模拟

使用 Pandat 软件的 PanSolidification 模块对铸造铝合金 A356 进行凝固模拟，该模块能够考虑凝固过程中固体中的反向扩散。模拟了包括凝固相、相分数和二次枝晶臂间距 (SDAS) 在内的铸件微观结构特征。模拟结果很好地解释了实验观察。进行高产量计算以了解合金成分和冷却速率对金属间相和 SDAS 在铸造显微组织中形成的影响。还模拟和讨论了 Mn 在消除有害 β-AlFeSi 相形成中的作用。