Vacuum Degassing of Carbon Fibers Reinforced Aluminum Matrix Composites Melt

Che Dehui; Yao Guangchun; Kang Wei

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Vacuum Degassing of Carbon Fibers Reinforced Aluminum Matrix Composites Melt
Vol. 30, Issue 7, Pages: 605-607(2010)
Published： 2010 ，
DOI：

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[1]车德会,姚广春,康伟.碳纤维增强铝基复合材料熔体真空除气[J].特种铸造及有色合金,2010,30(07):605-607+582.

Che Dehui, Yao Guangchun, Kang Wei. Vacuum Degassing of Carbon Fibers Reinforced Aluminum Matrix Composites Melt. [J]. Special Casting & Nonferrous Alloys 30(7):605-607(2010)
[1]车德会,姚广春,康伟.碳纤维增强铝基复合材料熔体真空除气[J].特种铸造及有色合金,2010,30(07):605-607+582. DOI：

Che Dehui, Yao Guangchun, Kang Wei. Vacuum Degassing of Carbon Fibers Reinforced Aluminum Matrix Composites Melt. [J]. Special Casting & Nonferrous Alloys 30(7):605-607(2010) DOI：

摘要

为解决搅拌铸造法制备的碳纤维增强铝基复合材料气孔率过高对材料性能的破坏问题

在熔体搅拌混合结束后

增加真空除气的工艺减少复合材料中的气体。采用阿基米德法测量了复合材料铸锭的相对密度

研究了碳纤维增强A356合金基复合材料熔体在0.03MPa的真空度下

真空炉温度、除气时间对复合材料铸锭致密度的影响。结果表明

当炉温为700℃、除气2min

即可将复合材料铸锭的气孔率降低至2%以下。通过扫描电镜观察了复合材料铸锭的组织

结果显示界面完好

未发现气孔。

Abstract

Entrapment-gas in the carbon fibers reinforced aluminum matrix composites melt could be reduced by vacuum degassing after stirring and mixing to resolve the damage of composites performance due to high gas porosities in prepared composites by stirring method.Relative density of the composites ingot was measured by the Archimedes law to understand effects of temperature of vacuum furnace

degassing time on compactness of the carbon fibers reinforced A356 aluminum matrix composites ingot in condition of vacuum rate of 0.03MPa.The results show that the gas porosities in the prepared composites ingot can be decreased by lower than 2% with degassing for 2 min at 700℃

and interface morphology of the composites was characterized by SEM （scanning electron microscope）

showing ideal interface with gas hole free.