| Mulliet／Al—4.5Cu复合材料的时效析出行为 |
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| 引用本文： | 龙剑平,李伟,景山,沈保罗,高升吉,涂铭旌.Mulliet／Al—4.5Cu复合材料的时效析出行为[J].四川大学学报(工程科学版),2001,33(5):94-97. |
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| 作者姓名： | 龙剑平 李伟 景山 沈保罗 高升吉 涂铭旌 |
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| 作者单位： | 四川大学制造科学与工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(59631080) |
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| 摘 要： | 选用挤压铸造法制备mullite/Al-4.5Cu复合材料，采用硬度测试（HB）、差示扫描量热DSC、透射电镜（TEM）等手段研究了mullite/Al-4.5Cu复合材料的时效特性。结果表明：莫来石纤维的引入明显提高了基体合金的时效硬度，加速了基体合金的时效硬化速度，对GP区的形成有抑作用，但没有改变基体合金的时效析出序列。复合材料具有和基体合金相似的时效硬化曲线。温度对两类材料时效硬化行为的影响基本一致。
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| 关 键 词： | 铝基复合材料 莫来石短纤维 Al－Cu合金 时效 Mullite／Al－4.5Cu合金 时效析出序列 时效硬度 |
| 文章编号： | 1009-3087(2001)05-0094-04 |
| 修稿时间： | 2001年6月11日 |
Ageing Characteristics of Mullite Short Fibre Reinforced Al-4.5 Cu Composite |
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| LONG Jian ping,LI Wei,JING Shan,SHEN Bao luo,GAO Sheng ji,TU Ming Jing.Ageing Characteristics of Mullite Short Fibre Reinforced Al-4.5 Cu Composite[J].Journal of Sichuan University (Engineering Science Edition),2001,33(5):94-97. |
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| Authors: | LONG Jian ping LI Wei JING Shan SHEN Bao luo GAO Sheng ji TU Ming Jing |
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| Abstract: | Mullite short fibre reinforced Al-4.5Cu composite was fabricated through squeeze casting .Ageing characteristics of mullite /Al-4.5Cu was studied by differential scanning calorimetry(DSC),transmission electron microscopy(TEM) and hardness tests(HB).It is shown that both the composite and its base alloy have the similar age hardening curves.The age hardness of Al-4.5Cu alloy is obviously increased and the age hardening progress is also obviously accelerated when synthenized with short mullite fibres.Mullite fibre has suppressed the GP zone formation but not changed the precipitation sequence of the base alloy.Temperature has the similar effect on the ageing behavior of mullite/Al- 4.5Cu composite and its base alloy. |
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| Keywords: | aluminium matrix composite mullite short fibre Al-4 5Cu alloy ageing |
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