| 原位内生Al/M g2Si/S i 复合材料铸态组织研究 |
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| 引用本文： | 张健,王玉庆,杨滨,周本濂.原位内生Al/M g2Si/S i 复合材料铸态组织研究[J].复合材料学报,1999,16(4):30-34. |
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| 作者姓名： | 张健 王玉庆 杨滨 周本濂 |
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| 作者单位： | 1.中国科学院金属研究所五室, 沈阳 110015; |
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| 摘 要： | 利用普通重力铸造方法, 制备了原位内生A l/Mg2Si/S i 复合材料。研究了体系中加入过量Si 后的显微组织, 并利用Al-Mg2Si-Si 三元相图进行分析。结果表明, 过量Si 使复合材料中的大长径比的Al+ Mg2Si 二元共晶向小长径比的Al+ Mg2Si+ Si 三元共晶转化, 并使α-Al 以球状晶粒析出, 从而改善了显微组织, 显著提高了复合材料的室温拉伸性能。
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| 关 键 词： | A l/Mg2Si/Si 原位内生 复合材料 显微组织 |
| 收稿时间： | 1998-03-28 |
| 修稿时间： | 1998-05-29 |
ON THE MICROSTRUCTURE OF AN AS CAST Al/Mg2Si/Si IN SITU COMPOSITE |
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| Zhang Jian,Wang Yu-qing,Yang Bing,Zhou Ben-lian.ON THE MICROSTRUCTURE OF AN AS CAST Al/Mg2Si/Si IN SITU COMPOSITE[J].Acta Materiae Compositae Sinica,1999,16(4):30-34. |
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| Authors: | Zhang Jian Wang Yu-qing Yang Bing Zhou Ben-lian |
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| Affiliation: | 1.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015; |
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| Abstract: | In situ Al/Mg2Si/Si composites were fabricated by using simple weight cast technique. Effects of extra Si contents on microstructure of Al/Mg2Si composite were investigated by optical microscopy and SEM with an EDXA accessory. Al Mg2Si Si ternary diagram was also introduced to analyze the microstructure. Experimental results indicated that extra Si in Al/Mg2Si system produced sphere like α Al grains and ternary eutectics with low aspect ratio. These microstructure improvements resulted in a significant increase in the materials' tensile properties. |
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| Keywords: | Al/Mg2Si/Si |
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