Most of the secondary dendrite arm spacing (λ₂) growth models existing in the literature deal with predictions for binary aluminum (Al) alloys. Only two solutions are available to estimate λ₂ for chemistries of major alloying elements in Al alloys, such as copper (Cu) and Silicon (Si). The coarsening models developed by Rappaz-Boettinger and Tiryakioglu were employed in this investigation. The multicomponent models enabled very distinct matches with the experimental data of Al-9 and 11 wt.% Si-3.0 wt.% Cu alloys.

中文翻译：

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Al-Si-Cu合金的实验次生枝晶间距和粗化模型的比较

大多数次级枝晶臂间距的（λ ₂）生长模型现有文献中处理的预测二进制铝（Al）的合金。只有两种解决方案可用于估计λ ₂为在铝合金主要合金元素，如铜（Cu）和硅（Si）的化学物质。由Rappaz-Boettinger和Tiryakioglu开发的粗化模型用于此调查。多组分模型能够与Al-9和11 wt％Si-3.0 wt％Cu合金的实验数据进行非常明显的匹配。