| Al_2O_3短纤维增强Al－Si合金复合材料的界面研究 |
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| 引用本文： | 蓝国秋,涂铭旌,李伟,李昆.Al_2O_3短纤维增强Al－Si合金复合材料的界面研究[J].中山大学学报(自然科学版),1995(3). |
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| 作者姓名： | 蓝国秋 涂铭旌 李伟 李昆 |
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| 作者单位： | 中山大学人才交流中心，成都科技大学金属材料系 |
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| 摘 要： | 本文采用电子探针和扫描电镜分析Ａｌ_２Ｏ_（３ｔ）／Ａｌ－Ｓｉ合金复合材料的界面和拉伸断口形貌，发现界面处有Ｍｇ富集；Ａｌ－Ｓｉ合金很好地润湿Ａｌ_２Ｏ_３纤维，并形成共格、半共格混合界面，提高了界面结合强度；纤维被剪切断裂，无拔出现象。用俄歇电子能谱仪对界面作深入研究，表明界面与基体的硅和铝的峰形发生了变化，证明峰形的变异是由形成共格、半共格混合界面引起的。
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| 关 键 词： | 界面，富集，润湿，共格、半共格混合界面，纤维剪断，峰形 |
Interface Study of Alumina Short Fibre-Reinforced Al-Si Alloy Matrix Composite |
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| Lan Guoqiu,Tu Mingjing,Li Wei,Li Kun Human Resource Center,zhongshan University,Guangzhou.Interface Study of Alumina Short Fibre-Reinforced Al-Si Alloy Matrix Composite[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,1995(3). |
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| Authors: | Lan Guoqiu Tu Mingjing Li Wei Li Kun Human Resource Center zhongshan University Guangzhou |
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| Institution: | Lan Guoqiu,Tu Mingjing,Li Wei,Li Kun Human Resource Center,zhongshan University,Guangzhou 510275 |
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| Abstract: | The interface of Al_2O_(3f)/Al-Si alloy matrix composite is examined by means of EP-MA,and it is found that there is accumulation of Mg at the interface,The analysis of tensile frac-ture shows that Al-Si alloy wets alumina fibres very well,and that coherent and semicoherentmixed interface is formed increasing the interfacial strength;Alumina fibres are sheared fracture,and no fibre pull-out is observed. The detailed study on the interface with AES indicates that thepeaks shape of Si and Al at the interface is different from that in the matrix due to the formationof the coherent and semicoherent mixed interface. |
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| Keywords: | interface accumulation wettability coherent and semicoherent mixed interface shear fracture of fibres peak shape |
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