| Solidified structure and solute segregation in Al2O3/A356-La alloy composites |
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| 作者姓名： | LIU Zheng TU Tao |
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| 作者单位： | Faculty of Material and Chemical Engineering, Jiangxi University of Science ＆ Technology, Ganzhou 341000, China |
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| 摘 要： | 1. Introduction Because of the addition of reinforcement, the field of temperature, field of flow, field of concen-tration, and thermodynamics and dynamics of crys-tal growth during the composite solidification as well as the structural morphology of the composite are changed in processing of the fiber-reinforced Al matrix composite manufactured by liquid infiltration. The flow of solute is hindered by the fibers because the reinforcement acts as a barrier to solute diffusion ahead of the liqu…
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| 关 键 词： | 合成物 凝固结构 溶质偏析 A356-La合金 |
| 收稿时间： | 2005-05-26 |
Solidified structure and solute segregation in Al2O3/A356-La alloy composites |
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| LIU Zheng TU Tao.Solidified structure and solute segregation in Al2O3/A356-La alloy composites[J].Rare Metals,2006,25(3):231-236. |
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| Authors: | LIU Zheng TU Tao |
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| Affiliation: | 1. University of Sao Paulo, Department of Materials, Aeronautic and Automotive Engineering, 13566-590 São Carlos, SP, Brazil;2. Federal University of Sao Carlos, Department of Engineering Materials, 13569-905 São Carlos, SP, Brazil;1. LSG2M, CNRS-UMR7584, Ecole des Mines, 54042 Nancy cedex, France;2. Ames Laboratory, Iowa State University, Ames IA 50014, USA;3. Institute Laue-Langevin, 6 rue Jules Horowitz, 38042 Grenoble, France;4. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6115, USA;1. Department of Material Science and Engineering, National Cheng-Kung University, Tainan, 701, Taiwan, ROC;2. Department of Mechanical Engineering, National Chin-Yi University of Technology, Taiping, Taichung, 411, Taiwan, ROC;3. Department of Electrical Engineering, Cheng Shiu Institute of Technology, Kaohsiung County, 833, Taiwan, ROC |
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| Abstract: | Al2O3/A356-La alloy composites were fabricated by squeeze casting, and the effects of La on the solidified structure and the solute segregation during alloy solidification were studied. The results indicate that the structure of the matrix alloy becomes fine and small by the addition of La. La has been richened at the interface to help improve the wettability between the fiber and Al alloy, but there are no intermetallic compounds richening La found at the interface yet. There is no special influence of La on the Mg segregation in the matrix alloy. The distribution of Mg and La in the composites has been at the same position--near the interface. |
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| Keywords: | composite solidified structure solute segregation A356-La alloy |
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