| 微量Sc和Zr对Al-Mg合金晶粒细化作用的电子结构分析 |
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| 引用本文： | 高英俊,刘慧,吴伟明,钟夏平.微量Sc和Zr对Al-Mg合金晶粒细化作用的电子结构分析[J].广西科学,2003,10(1):32-35. |
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| 作者姓名： | 高英俊 刘慧 吴伟明 钟夏平 |
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| 作者单位： | 1. 广西大学物理系,南宁市大学路100号,530004
2. 桂林工学院材料科学系,桂林市建干路12号,541004 |
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| 基金项目： | 国家自然科学基金项目(50061001)，广西科学基金匹配项目(桂科配0135006)，广西科学基金项目(0007020)，广西“十百千人才”项目(2001207)资助。 |
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| 摘 要： | 运用固体经验电子理论（EET），对掺微量Sc和Zr的Al-Mg合金的介电子结构进行计算。结果表明：Zr,Sc与Al原子存在强烈的相互作用，形成Al-Zr,Al-Sc,Al-Zr-Sc偏聚区，Al-Zr-Sc原子的强烈偏聚易形成Al3(Zr,Sc1-x)复合相粒子，对基体晶粒起到强烈的晶粒细化作用。
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| 关 键 词： | Sc Zr Al－Mg 晶粒细化 电子结构分析 铝镁合金 锆 钪 |
| 收稿时间： | 2002/8/16 0:00:00 |
| 修稿时间： | 2002年8月16日 |
Valence Electronic Structures of Al-Mg Alloy with Minor Sc and Zr and Its Effect on Grain Refinement |
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| Gao Yingjun,Zhong Xiaping,Liu Hui and Wu Weiming.Valence Electronic Structures of Al-Mg Alloy with Minor Sc and Zr and Its Effect on Grain Refinement[J].Guangxi Sciences,2003,10(1):32-35. |
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| Authors: | Gao Yingjun Zhong Xiaping Liu Hui and Wu Weiming |
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| Institution: | Department of Physics, Guangxi University, 100 Daxuelu, Nanning, Guangxi, 530004, China,Department of Physics, Guangxi University, 100 Daxuelu, Nanning, Guangxi, 530004, China,Department of Physics, Guangxi University, 100 Daxuelu, Nanning, Guangxi, 530004, China and Department of Physics, Guangxi University, 100 Daxuelu, Nanning, Guangxi, 530004, China |
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| Abstract: | The valence electron structures of Al-Mg alloy with minor Sc and Zr were analyzed according to the Empirical Electronic Theory in solid and molecules (EET) .The results showed that the strong interaction of Al with Zr and Sc, which leads to the behavior of Al-Zr segregation, Al-Sc segregation and Al-Zr-Sc segregation, promoted the precipitations of A13 (ZrxSc1-x) phases, and could produced the remarkable refinement in the grain size of Al-Mg alloys. |
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| Keywords: | Al-Mg alloys valence electronic structure segregation grain refinement |
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