| 熔体温度处理对磷铜变质Al-20%Si组织的影响 |
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| 引用本文： | 李秋菊,王连登,魏喆良,陈永禄. 熔体温度处理对磷铜变质Al-20%Si组织的影响[J]. 福建建筑高等专科学校学报, 2013, 0(1): 43-46 |
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| 作者姓名： | 李秋菊 王连登 魏喆良 陈永禄 |
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| 作者单位： | [1]福州大学机械工程及自动化学院,福建福州350116 [2]福建工程学院材料科学与工程学院,福建福州350118 |
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| 基金项目： | 福建省科技厅重点项目（2010H0002）; 福建省教育厅A类科研项目（JA09173）; 福州大学科技发展基金资助项目（2010-XY-11） |
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| 摘 要： | 研究熔体温度处理工艺（包括熔体混合及熔体过热处理）与磷铜变质对Al-20%Si合金中硅相形态的影响。结果表明：在本试验条件下,单纯添加磷铜变质剂的Al-20%Si合金,当添加其合金质量的0.4%时,初晶硅由未变质前的97μm减小到65μm,减小了33%;当将熔体温度处理工艺与磷变质处理相结合时,此时Al-20%Si合金中的初晶硅尺寸减小至36μm,减小了62%,且钝化现象显著,弥散分布于α-Al基体上,共晶硅也由未变质前的长针状变为短纤维状和点状。
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| 关 键 词： | 过共晶铝硅合金 磷铜细化剂 熔体温度处理 熔体混合 |
The effect of melt thermal treatment on the microstructure of Al- 20 % Si alloy modified by Cu-P |
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| Li Qiuju,Wang Liandeng,Wei Zheliang,Chen Yonglu. The effect of melt thermal treatment on the microstructure of Al- 20 % Si alloy modified by Cu-P[J]. Journal of Fujian College of Architecture & C.E., 2013, 0(1): 43-46 |
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| Authors: | Li Qiuju Wang Liandeng Wei Zheliang Chen Yonglu |
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| Affiliation: | 2 (1. College of Mechanical Engineering, Fuzhou University, Fuzhou 350116, China; School of Material Sciences and Engineering, Fujian University of Technology, Fuzhou 350118, China) |
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| Abstract: | The effect of melt thermal treatments including melt mixing and melt overheating on the （silicon phase） morphology of Al-20% Si alloy modified by Cu-P was studied. The size of primary Si of Al -20%Si was decreased from 97μm to 65μm with a decrease rate of 33%, when 0.4wt% Cu - P was added to Al - 20% Si melt. When Al - 20% Si alloy was modified by Cu-P master alloy under melt thermal temperature, the size of primary Si was decreased to 361μm with a decrease of 62%. The primary Si was markedly passivated and well distributed on the α-Al matrix, whereas the eutectic Si was changed from needle-like to flocks or particles. |
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| Keywords: | hypereutectic A1-Si alloy Cu-P melt thermal treatment melt mixing |
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