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A semi-analytical model of microsegregation and coarsening in a binary alloy

机译:二元合金中微观偏析和粗化的半解析模型

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摘要

On making suitable approximations for the redistribution of solute in the solid and the nature of coarsening a semi-analytical microsegregation and coarsening model for the analysis of the solidification of a constantly cooled binary eutectic alloy is developed. This model is calibrated by matching results with a limiting case microsegregation model and the standard t~(1/3) coarsening model. Predictions - arm spacing and eutectic fractions - are in close agreement with experimental values and predictions obtained with a complete numerical solution of microsegrgation with coarsening.
机译:在为溶质在固体中的再分布和粗化的性质做出合适的近似值之后,建立了半分析微偏析和粗化模型,用于分析恒定冷却的二元共晶合金的凝固。通过将结果与极限情况微偏模型和标准t〜(1/3)粗化模型进行匹配来校准该模型。预测-臂间距和共晶分数-与实验值和通过粗化微偏析的完整数值解获得的预测非常吻合。

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