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首页> 外文期刊>High temperature materials and processes >Cellular Automaton Modeling of Phase Transformation of U-Nb Alloys during Solidification and Consequent Cooling Process
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Cellular Automaton Modeling of Phase Transformation of U-Nb Alloys during Solidification and Consequent Cooling Process

机译：凝固过程中U-NB合金相变的细胞自动机制及随后冷却过程

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The microstructure evolution of U-Nb alloys during solidification and consequent cooling process was simulated using a cellular automaton (CA) model. By using this model, ? phase precipitation and monotectoid decomposition were simulated, and dendrite morphology of ? phase, Nb microsegregation and kinetics of monotectoid decomposition were obtained. To validate the model, an ingot of U-5.5Nb (wt.%) was produced and temperature measuring experiment was carried out. As-cast microstructure at different position taken from the ingot was investigated by using optical microscope and SEM. The effect of cooling rate on ? phase precipitation and monotectoid decomposition of U-Nb alloys was also studied. The simulated results were compared with the experimental results and the capability of the model for quantitatively predicting the microstructure evolution of U-Nb alloys during solidification and consequent cooling process was assessed.
机译：使用蜂窝自动机（CA）模型模拟​​凝固过程中U-NB合金的微观结构演化和随后的冷却过程。通过使用此模型，？模拟相沉淀和单抗体分解，以及枝形形态的？获得相，Nb微量测定和单型分解的动力学。为了验证模型，制备了U-5.5NB（WT.％）的铸锭，进行了温度测量实验。通过使用光学显微镜和SEM研究了从铸锭采取的不同位置的铸造微观结构。冷却速率的影响？还研究了U-NB合金的相沉淀和单抗体分解。将模拟结果与实验结果进行比较，并且评估了在凝固过程中定量预测U-NB合金的微观结构演化的模型的能力，并评估了随后的冷却过程。

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