| Al-Fe-Mg-Mn-Si系合金凝固显微组织及其模型预测 |
| |
| 引用本文： | 杜勇,徐洪辉,黄伯云,潘竹,陈海林,熊伟,刘树红,刘咏,贺跃辉.Al-Fe-Mg-Mn-Si系合金凝固显微组织及其模型预测[J].粉末冶金材料科学与工程,2004,9(3):175-183. |
| |
| 作者姓名： | 杜勇 徐洪辉 黄伯云 潘竹 陈海林 熊伟 刘树红 刘咏 贺跃辉 |
| |
| 作者单位： | 中南大学粉末冶金国家重点实验室,湖南,长沙,410083 |
| |
| 摘 要： | 对Al-Fe-Mg-Si和Al-Fe-Mn-Si2个四元系进行热力学优化评估,并对这2个四元系富Al角的零变量平衡反应温度和液相成分进行了计算。采用光学显微镜,扫描电镜和电子探针技术,系统研究了多组元Al基合金Al356.1定向凝固的显微组织及显微偏析。计算模拟了3个多组元Al合金(Al356.1,Al356.2,Al518.2)的平衡凝固和非平衡凝固的显微组织及显微偏析。模型计算结果与实测数据很吻合,证实了所建立的多组元体系热力学及动力学数据库的可靠性。
|
| 关 键 词： | 铝基合金 凝固 显微组织 计算模拟 |
| 修稿时间： | 2004年4月25日 |
Microstructure simulation of directionally solidified Al-Fe-Mg-Mn-Si alloys |
| |
| DU Yong,XU Hong-hui,HUANG Bai-yun,Pan Zhu,CHEN Hai-lin,XIONG Wei,Liu Shu-hong,LIU Yong,HE Yue-hui.Microstructure simulation of directionally solidified Al-Fe-Mg-Mn-Si alloys[J].materials science and engineering of powder metallurgy,2004,9(3):175-183. |
| |
| Authors: | DU Yong XU Hong-hui HUANG Bai-yun Pan Zhu CHEN Hai-lin XIONG Wei Liu Shu-hong LIU Yong HE Yue-hui |
| |
| Abstract: | The thermodynamic assessments of two quaternary systems Al-Fe-Mg-Si and Al-Fe-Mn-Si were performed, and the reaction temperatures and liquid compositions for invariant equilibria in the Al-rich parts of the quaternary systems Al-Fe-Mg-Si and Al-Fe-Mn-Si were calculated. Systematic investigation on the microstructure and microsegregation of di-rectionally solidified multicomponent alloy A1356. 1 was conducted by using optical microscopy, SEM( scanning electron microscope) and EPMA (electron probe microanalysis) techniques. The microstructure and microsegregation of three multicomponent alloys (A1356. 1, A1356. 2 and A1518. 2) were simulated under the conditions of equilibrium solidification and non-equilibrium solidification. The good agreement between the model-predicted results and the experimental ones demonstrats the reliability of the established thermodynamic and kinetic databases. |
| |
| Keywords: | Al-based alloys solidification microstructures simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
