| Influence of coupling with calculation of phase diagrams on microsegregation forming simulation of Al-4.5%Cu alloy |
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| 作者姓名： | 刘永刚 陈光 孙国雄 |
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| 作者单位： | [1]Joint Laboratory of Nanostructured Materials and Technology, Nanjing University of Science and Technology, Nanjing 210094, China [2]Department of Materials Science and Engineering, Southeast University, Nanjing 210096, China |
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| 基金项目： | Project （59974011） supported by the National Natural Science Foundation of China.Acknowledgements The authors are grateful for financial support from the National Natural Science Foundation of China （59974011）. Heartfelt thanks are also given to the CompuTherm LLC group of Wisconsin-Madison University for providing the software program to calculate the phase equilibria. |
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| 摘 要： |
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| 关 键 词： | 铜铝合金 显微偏析 相图 模拟计算 凝固过程 |
| 收稿时间： | 2006-04-20 |
| 修稿时间： | 2006-06-30 |
Influence of coupling with calculation of phase diagrams on microsegregation forming simulation of Al-4.5%Cu alloy |
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| LIU Yong-gang, CHEN Guang, SUN Guo-xiong.Influence of coupling with calculation of phase diagrams on microsegregation forming simulation of Al-4.5%Cu alloy[J].Transactions of Nonferrous Metals Society of China,2006,16(A02):149-153. |
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| Authors: | LIU Yong-gang CHEN Guang SUN Guo-xiong |
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| Abstract: | The effect of coupling with calculation of phase diagrams on microsegregation forming simulation was investigated. The traditional simplified phase diagram and calculated phase diagram were introduced into the numerical models respectively and simulation on microsegregation forming of the Al-4.5%Cu alloy ingot was also presented. The simulation results were both compared with the experiment results. The results show that the calculated sencondary arm spacing with these two kinds of phase diagram are almost the same because relationship between the coarsening model and the information of phase diagram is not close. The calculated eutectic phase volume fractions of different locations in the ingot coupled with different phase diagrams are discrepant. The calculated volume fractions are consistent with the experiment results when calculated phase diagram couples, but are far from the experiment results and obviously inacceptable when traditional simplified phase diagram couples. So, coupling with accurate calculated phase diagrams is very significant for microsegregation forming simulation since much information of the phase diagram is used in the models and it can improve the precision of simulation results. |
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| Keywords: | microsegregation simulation calculation of phase diagrams |
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