| SiCp增强铝基复合材料的铸造缺陷分析 |
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| 引用本文： | 吴洁君 王殿斌. SiCp增强铝基复合材料的铸造缺陷分析[J]. 金属学报, 1999, 35(1): 103-108 |
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| 作者姓名： | 吴洁君 王殿斌 |
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| 作者单位： | 北京航空材料研究院先进复合材料国防科技重点实验室 |
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| 基金项目： | 国家863先进技术资助项目 |
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| 摘 要： | 对搅拌铸造法制备的ＳｉＣｐ增强铝基复合材料铸件产生缺陷的形貌及形成机理进行了分析研究。结果表明，ＳｉＣｐ在Ａｌ液中物理、化学上处于不稳定状态－ＳｉＣｐ和Ａｌ液不浸润，不能作为α－Ａｌ的形核核心；以及ＳｉＣｐ和Ａｌ液能够产生自发反应，是造成该复合材料出现气孔、夹杂、团聚、集聚、偏析和界面杂质等缺陷的主要原因。而搅拌复合和铸造工艺参数不当，则是造成上述缺陷的重要原因。
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| 关 键 词： | 复合材料 铝基 铸造缺陷 浸润 碳化硅 |
ANALYSIS OF CASTING DEFECTS IN SiC p REINFORCED ALUMINUM MATRIX COMPOSITES |
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| WU Jiejun,WANG Dianbin,GUI Manchang,CUI Yan,YUAN Guangjiang The National Key Laboratory of Advanced Composites,Beijing Institute of Aeronautical Material,Beijing. ANALYSIS OF CASTING DEFECTS IN SiC p REINFORCED ALUMINUM MATRIX COMPOSITES[J]. Acta Metallurgica Sinica, 1999, 35(1): 103-108 |
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| Authors: | WU Jiejun WANG Dianbin GUI Manchang CUI Yan YUAN Guangjiang The National Key Laboratory of Advanced Composites Beijing Institute of Aeronautical Material Beijing |
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| Affiliation: | WU Jiejun,WANG Dianbin,GUI Manchang,CUI Yan,YUAN Guangjiang The National Key Laboratory of Advanced Composites,Beijing Institute of Aeronautical Material,Beijing 100095 |
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| Abstract: | The stir-casting method can manufacture complex-shape and low-cost founding,but easy brings many kinds of casting defects. The morphology and origin of these defects a investigated in detail.SiC p is unwettable with melt Al and its surface not suitable sites for Al nucleation, but can react with Al spontaneously. So the unstable state of SiC p in melt Al is the main reason which leads to the formation of these defects, such as porosity, inclusion, aggregation,agglomeration, segregation and interface impurity phase. The parameters used in stirring-synthesis and cast processes also effect the structure damages in the composite. |
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| Keywords: | SiC p reinforced composite aluminum matrix casting defect wetting |
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