| Al_2O_3短纤维／Al－12Si复合材料微观断裂的TEM原位观察 |
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| 引用本文： | 张喜燕,刘世楷,高庆.Al_2O_3短纤维／Al－12Si复合材料微观断裂的TEM原位观察[J].西南交通大学学报,1996(3). |
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| 作者姓名： | 张喜燕 刘世楷 高庆 |
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| 作者单位： | 西南交通大学材料工程系 |
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| 摘 要： | 利用挤压铸造法制备了Ａｌ２Ｏ３（２０％Ｖ）／Ａｌ－１２Ｓｉ复合材料并采用透射电镜动态拉伸技术对复合材料的裂纹形成及微观断裂过程进行了原位观察，发现该复合材料的纤维／基体界面是破坏路径之一，并发现了纤维中裂纹形成及扩展至纤维完全破坏的现象
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| 关 键 词： | 金属基复合材料 断裂 断裂力学 微观结构 Al2O3 Al合金 |
A TEM In Situ Observation of the Micro Fracture in Al 2O 3 Fibre/Al 12Si Composite |
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| Zhang,Xiyan Liu,Shikai Gao,Qing.A TEM In Situ Observation of the Micro Fracture in Al 2O 3 Fibre/Al 12Si Composite[J].Journal of Southwest Jiaotong University,1996(3). |
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| Authors: | Zhang Xiyan Liu Shikai Gao Qing |
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| Abstract: | The crack initiation and fracture of the Al 2O 3 short fibre reinforced Al 12Si matrix composite which was prepared by using squeeze cast method were in situ studied in a transmission electron microscope (TEM).The results show that the fibre/matrix interface is the one of the fracture courses of the composite.Also,the phenomenon of the failure of the fibre resulted from crack initiation and propagation in it was observed in the experiment. |
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| Keywords: | metal matrix materials fracture fracture mechanics microstructure Al 2O 3 Al alloy |
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