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Semi-empirical modeling for columnar and equiaxed growth of alloys

机译:合金的柱状和等轴生长的半经验模型

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摘要

The columnar and equiaxed growth of low-melting point binary alloys (Pb-Sn) was studied in a wide range of concentrations. From temperature measurements a number of important dynamic parameters were derived, such as cooling rates, profiles, gradients and the velocity of liquidus and solidus fronts. These parameters were correlated with the structure-like length of columnar grains and size of equiaxed grains. These correlations were used to predict the solidification structure with the aid of a thermal model of solidification. An original feature of the thermal model is the way the latent heat is calculated and released.
机译:在广泛的浓度范围内研究了低熔点二元合金(Pb-Sn)的柱状和等轴生长。从温度测量中得出了许多重要的动态参数,例如冷却速率,轮廓,梯度以及液相线和固相线前沿的速度。这些参数与柱状晶粒的结构状长度和等轴晶粒的尺寸相关。这些相关性用于借助凝固的热模型来预测凝固结构。热模型的原始特征是潜热的计算和释放方式。

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