| Effect of Cu on microstructure and mechanical properties of 2519 aluminum alloy |
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| 作者姓名： | 李慧中 张新明 陈明安 刘瑛 周卓平 |
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| 作者单位： | School of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | The effect of Cu on the microstructure and mechanical properties of 2519 aluminum alloy was investigated by means of tensile test, microhardness test, transmission electron microscopy, and scanning electron microscopy. The results show that when the content of Cu is less than 6.0%, the strength of 2519 aluminum alloy increases with the increase of Cu eontent; when the content of Cu is more than 6.0%, the strength of the alloy decreases. The hardening effect of the aged alloy is accelerated at 180℃ and the time to peak age is reduced, but the plasticity of the alloy gradually decreases with the increase of Cu content. However, the hardening effect of the aged alloy decreases with the increase of Cu as the content of Cu is over 6.0%. The optimal content of Cu of 2519 aluminum alloy is 6.0%, at which the alloy has best tensile strength and plasticity.
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| 关 键 词： | 铜 微观结构 铝合金 机械特性 强度 |
| 文章编号： | 1003-6326（2005）05-1026-05 |
| 收稿时间： | 2004-10-21 |
| 修稿时间： | 2005-02-02 |
Effect of Cu on microstructure and mechanical properties of 2519 aluminum alloy |
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| LI Hui-zhong,ZHANG Xin-ming,CHEN Ming-an,LIU Ying,ZHOU Zhuo-ping.Effect of Cu on microstructure and mechanical properties of 2519 aluminum alloy[J].Transactions of Nonferrous Metals Society of China,2005,15(5):1026-1030. |
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| Authors: | LI Hui-zhong ZHANG Xin-ming CHEN Ming-an LIU Ying ZHOU Zhuo-ping |
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| Abstract: | The effect of Cu on the microstructure and mechanical properties of 2519 aluminum alloy was investigated by means of tensile test, microhardness test, transmission electron microscopy, and scanning electron microscopy. The results show that when the content of Cu is less than 6.0%, the strength of 2519 aluminum alloy increases with the increase of Cu content; when the content of Cu is more than 6.0%, the strength of the alloy decreases.The hardening effect of the aged alloy is accelerated at 180 ℃ and the time to peak age is reduced, but the plasticity of the alloy gradually decreases with the increase of Cu content. However, the hardening effect of the aged alloy decreases with the increase of Cu as the content of Cu is over 6.0%. The optimal content of Cu of 2519 aluminum alloy is 6.0%, at which the alloy has best tensile strength and plasticity. |
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| Keywords: | 2519 aluminum alloy copper ageing microstructures mechanical properties |
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