| La对Al2O3f/Al-Mg复合材料凝固溶质偏析的影响 |
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| 引用本文： | 刘政,涂弢.La对Al2O3f/Al-Mg复合材料凝固溶质偏析的影响[J].特种铸造及有色合金,2006,26(8):465-467. |
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| 作者姓名： | 刘政 涂弢 |
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| 作者单位： | 江西理工大学,江西赣州,341000 |
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| 基金项目： | 教育部科学技术研究重点项目;江西省自然科学基金 |
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| 摘 要： | 利用挤压铸造法制备了Al2O3／Al-Mg-La复合材料。研究了La在铝合金基体中的分布，并探讨了La对基体凝固时溶质元素偏析的影响。结果表明，La富集在界面附近，有利于改善铝合金液对Al2O3f的润湿性，但是在界面上未发现任何富稀土相的形成。La的加入对基体合金中的Mg的偏聚没有很明显的影响，Mg和La作为表面活性元素都在界面处富集，且它们的分布位置大致一样。
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| 关 键 词： | 稀土La 复合材料 溶质偏析 Al-Mg合金 |
| 文章编号： | 1001-2249（2006）08-0465-03 |
| 收稿时间： | 2006-03-10 |
| 修稿时间： | 2006年3月10日 |
Effects of RE La on Solute Segregation of Al2O3f/Al-Mg Composites during Solidification |
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| Liu Zheng,Tu Tao.Effects of RE La on Solute Segregation of Al2O3f/Al-Mg Composites during Solidification[J].Special Casting & Nonferrous Alloys,2006,26(8):465-467. |
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| Authors: | Liu Zheng Tu Tao |
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| Abstract: | The distribution of La in aluminum alloy matrix and its effects on solute segregation during matrix solidification are investigated based on Al_2O_ 3f /Al-Mg-La composites prepared by squeezing casting. The results show that enrichment of La on interface is favorable for improving the wettability of Al_2O_ 3f particle in liquid aluminum alloy. However, the absence of RE-enriched on interface are observed. La has slightly affected on segregation of Mg in matrix alloy, and both Mg and La can enrich on interface with the same position distribution. |
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| Keywords: | Al2O3f |
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