| SiCP/AZ80镁基复合材料的界面与断口特征 |
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| 引用本文： | 蔡叶,苏华钦.SiCP/AZ80镁基复合材料的界面与断口特征[J].复合材料学报,1997,14(2):76-79. |
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| 作者姓名： | 蔡叶 苏华钦 |
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| 作者单位： | [1]中南工业大学粉末冶金研究所 [2]东南大学机械工程系 |
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| 摘 要： | 本文用SEM,TEM研究了SiC颗粒增强AZ80镁合金复合材料的界面结构和断口形貌。结果表明,SiC颗粒与镁合金界面结合紧密,没有发生界面化学反应,但在界面处可以观察到Mg17Al12共晶相在SiC表面形核生长。对复合材料断口观察表明,SiC颗粒与镁合金界面之间的粘结强度大于基体的撕裂强度,SiC颗粒的聚集、团聚是导致复合材料断裂的主要原因,且复合材料的断裂形式趋向脆性断裂。
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| 关 键 词： | 镁合金复合材料 界面结构 断口形貌 |
| 收稿时间： | 1995-11-02 |
| 修稿时间： | 1996-03-15 |
CHARACTERISTIC OF THE INTERFACE AND FRACTURE SURFACE ON SiC P/AZ80 COMPOSITE |
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| Cai Ye.CHARACTERISTIC OF THE INTERFACE AND FRACTURE SURFACE ON SiC P/AZ80 COMPOSITE[J].Acta Materiae Compositae Sinica,1997,14(2):76-79. |
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| Authors: | Cai Ye |
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| Affiliation: | 1. State key Lab. for Powder Metallurgy, Powder Metallurgy Research Institute, Central South University of Technology Changsha 410083;2. Department of Mechanical Engineering, Southeast University, Nanjing 210096 |
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| Abstract: | The interface and fracture surface of SiC P/AZ80 composites were examined by SEM and TEM. It showed that the interface was very smooth and there was no chemical reaction, but the Mg 17 Al 12 eutectic phase nucleated on SiC surface can be observed at the interface. Examination of the fracture surface indicated that the bonding strength between SiC and matrix alloy was stronger than that of matrix. The SiC particles segregation is the main cause of the SiC P/AZ80 composite failure. |
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| Keywords: | magnesium alloy composite interfacial structure fracture surface |
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