| Al-Fe-Si合金基体及强化相Al12(Fe,X)3Si价电子结构分析 |
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| 引用本文： | 屈华,刘伟东,刘玉颖. Al-Fe-Si合金基体及强化相Al12(Fe,X)3Si价电子结构分析[J]. 稀有金属, 2011, 35(4). DOI: 10.3969/j.issn.0258-7076.2011.04.022 |
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| 作者姓名： | 屈华 刘伟东 刘玉颖 |
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| 作者单位： | 1. 辽宁工业大学材料科学与工程学院,辽宁锦州,121001
2. 锦州阳光能源有限公司,辽宁锦州,121001 |
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| 基金项目： | 辽宁省自然科学基金项目(20031083); 辽宁省教育厅高校重点实验室支持计划项目(LS2010082)资助 |
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| 摘 要： | 基于EET理论,计算了Al-Fe-Si合金基体与强化相Al12Fe3Si,Al12(Fe,X)3Si的价电子结构,探讨了价电子结构与合金强化、合金相稳定性的关系及合金元素X对强化相稳定性的影响.结果表明:与基体α-Al相比,强化相Al12Fe3Si,Al12(Fe,X)3Si的n(A)值分别增强了248%,208%～231%,位错运动阻力分别增大2.48倍和2.08～2.31倍,从合金相价电子结构参数n(A)看,溶质原子固溶强化作用弱于析出相的强化作用;合金元素V,Cr,W,Mo,Mn的加入改变了Al12FeSi的价电子结构,使其原子状态组数σ(N)增加了2个数量级,使合金相的稳定性增强,进而延缓了粗化速度;V,Cr,W,Mo,Mn对Al12Fe3Si相稳定性影响的强弱顺序为Cr(Mn)→W(Mo)→V.
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| 关 键 词： | Al-Fe-Si合金 Al12Fe3Si 价电子结构 强化 稳定性 |
Analysis of Valence Electron Structures of Matrix and Precipitated Phase Al12(Fe,X)3Si in Al-Fe-Si Alloy |
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| Qu Hua,Liu Weidong,Liu Yuying. Analysis of Valence Electron Structures of Matrix and Precipitated Phase Al12(Fe,X)3Si in Al-Fe-Si Alloy[J]. Chinese Journal of Rare Metals, 2011, 35(4). DOI: 10.3969/j.issn.0258-7076.2011.04.022 |
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| Authors: | Qu Hua Liu Weidong Liu Yuying |
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| Affiliation: | Qu Hua1,Liu Weidong1,Liu Yuying2 (1.School of Materials Science and Engineering,Liaoning University of Technology,Jinzhou 121001,China,2.Jinzhou Yangguang Energy Co.,Ltd.,China) |
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| Abstract: | According to the empirical electron theory of solid and molecules,the valence electron structures(VESs) of the matrix and the strengthening phases of Al12Fe3Si and Al12(Fe,X)3Si in Al-Fe-Si alloy were calculated.The relationships between the VESs and alloy strengthening and the stability of alloy phases and the effects of alloying element X on the stability of the strengthening phases were discussed.The results showed that the values of nA of Al12Fe3Si and Al12(Fe,X)3Si increased by 248% and 208%~231%,and t... |
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| Keywords: | Al-Fe-Si alloy Al12Fe3Si valence electron structure strengthen stability |
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