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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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连续凝固偏晶合金薄带凝固组织进化过程模拟
, PP. 525-528
Keywords: 偏晶合金,连续凝固,组织演变,模拟
Abstract:
分析了偏晶合金薄带垂直连续凝固过程,发展了描述该条件下偏晶合金凝固组织演变的数学模型.将计算的温度场和浓度场与凝固组织演变的控制方程相耦合.模拟了Al5Pb(质量分数.%)合金的凝固过程.结果表明.在固/液界面前存在一过冷区.弥散相液滴在此区间内形核.这些液滴在移向凝固界面的过程中进行扩散长大.随着凝固速度的提高.形核率升高,弥散相液滴的数量密度增大.平均半径减小.
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