| 引用本文： |
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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. [点击复制]
- Gao Yingjun,Zhong Xiaping,Liu Hui,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. [点击复制]
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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合金的价电子结构进行计算。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(ZrxSc1-x)复合相粒子,对基体晶粒起到强烈的晶粒细化作用。 |
| 关键词: Al-Mg合金 价电子结构 偏聚 晶粒细化 |
| DOI： |
| 投稿时间：2002-08-16 |
| 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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| 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, Wu Weiming
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| (Department of Physics, Guangxi University, 100 Daxuelu, Nanning, Guangxi, 530004, China) |
| 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 Al3(ZrxSc1-x) phases, and could produced the remarkable refinement in the grain size of Al-Mg alloys. |
| Key words: Al-Mg alloys valence electronic structure segregation grain refinement |
