| Cu/Mg比对Al-Cu-Mg-Ag合金耐腐蚀性能的影响 |
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| 引用本文： | 颜鹏飞,刘志义,柏松,王建,赵娟刚,曹靖. Cu/Mg比对Al-Cu-Mg-Ag合金耐腐蚀性能的影响[J]. 矿冶工程, 2021, 41(6): 218-220. DOI: 10.3969/j.issn.0253-6099.2021.06.052 |
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| 作者姓名： | 颜鹏飞 刘志义 柏松 王建 赵娟刚 曹靖 |
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| 作者单位： | 中南大学 材料科学与工程学院,湖南 长沙410083 |
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| 摘 要： | 对Al-Cu-Mg-Ag合金进行了中性盐雾试验，并采用扫描电镜、透射电镜以及电化学测量等方法研究了合金的腐蚀行为及其腐蚀机理。结果表明，在欠时效状态下，各合金均无PFZ，且晶内均无析出相; 随着Cu/Mg比升高，合金中S相粒子逐渐增多，且晶界处析出相随之增加，并由不连续变成连续; 合金耐腐蚀性能随Cu/Mg比增加逐渐恶化。
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| 关 键 词： | Al-Cu-Mg-Ag合金 Cu/Mg比 中性盐雾试验 腐蚀 电化学性能 |
| 收稿时间： | 2021-06-06 |
Effect of Cu/Mg Ratio on Corrosion Resistance of Al-Cu-Mg-Ag Alloy |
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| YAN Peng-fei,LIU Zhi-yi,BAI Song,WANG Jian,ZHAO Juan-gang,CAO Jing. Effect of Cu/Mg Ratio on Corrosion Resistance of Al-Cu-Mg-Ag Alloy[J]. Mining and Metallurgical Engineering, 2021, 41(6): 218-220. DOI: 10.3969/j.issn.0253-6099.2021.06.052 |
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| Authors: | YAN Peng-fei LIU Zhi-yi BAI Song WANG Jian ZHAO Juan-gang CAO Jing |
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| Affiliation: | School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China |
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| Abstract: | Neutral salt spray testing was performed for Al-Cu-Mg-Ag alloy and then the corrosion behavior and the corrosion mechanism of the alloy were investigated by using SEM, TEM and electrochemical measurements. The results show that after under-aging treatment, precipitation didn't appear in grain and PFZ (precipitation free zone) didn't appear on grain boundary among the alloy. As Cu/Mg ratio increases, the fraction of S-phase particles in the alloy gradually increases, the precipited phases on the grain boundaries increase and transit from discontinuous state to continuous state, but the corrosion resistance of the alloy gradually deteriorates. |
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| Keywords: | Al-Cu-Mg-Ag alloy Cu/Mg ratio neutral salt spray testing corrosion electrochemical performance |
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