Al-4.7%Cu合金铸锭宏观偏析的数值模拟及实验验证  

Numerical Simulation and Experimental Verification of Macro-segregation in Al-4.7%Cu Alloy Ingot

作　　者：周黎明[1] 王健[1] 潘红[1] 郭仁军[1] 冯长海[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130

出　　处：《铸造技术》2014年第5期992-994,共3页Foundry Technology

基　　金：国家重点基础研究发展计划资助项目(2011CB610402)

摘　　要：基于凝固理论和欧拉多相流方法,以相体积分数为宏-微观耦合的纽带,建立了宏-微观耦合计算宏观偏析的数学模型,对Al-4.7%Cu合金铸锭进行了相体积分数、温度场、溶质场等方面的模拟计算,预测了铸锭凝固过程中的固-液界面形态和组织演化规律。结果证明,实验结果和模拟结果较吻合。A mathematical model of macro-segregation with macro-micro coupling calculation was established based on the solidification theory and Eulerian multiphase fluent algorithm. The phase volume fraction, temperature field and solute field in Al-4.7%Cu alloy ingot were numerically simulated. The morphology of solid-liquid interface and the evolution rule of the microstructure of the ingot were predicted in the process of solidification. The results prove that the simulation results coincide with the experimental results.

关 键 词：多相流 体积分数 组织演化 宏观偏析 

分 类 号：TG292[金属学及工艺—铸造]