| Si含量对Al-6.5Cu-0.6Mn-0.5Fe合金组织演变及力学性能的影响（英文） |
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| 引用本文： | 许锐,林波,李浩宇,肖华强,赵俞亮,张卫文.Si含量对Al-6.5Cu-0.6Mn-0.5Fe合金组织演变及力学性能的影响（英文）[J].中国有色金属学会会刊,2019(8):1583-1591. |
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| 作者姓名： | 许锐 林波 李浩宇 肖华强 赵俞亮 张卫文 |
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| 作者单位： | 贵州大学机械工程学院;东莞理工学院机械工程学院;华南理工大学机械与汽车工程学院 |
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| 基金项目： | Projects(51704084,51605106) supported by the National Natural Science Foundation of China;Project(2017M623068) supported by China Postdoctoral Science Foundation;Project(2015A030312003) supported by the Natural Science Foundation for Team Research of Guangdong Province,China;Project(JC(2016)1026)) supported by the Science and Technology Foundation of Guizhou Province of China;Project(KY(2017)101)) supported by the Young Talent Growth Foundation of Education Department of Guizhou Province of China;Project(RC2017(5788)) supported by the Science and Technology Plan of Guizhou Province of China |
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| 摘 要： | 采用定量分析、扫描电镜、透射电镜和拉伸性能测试研究Si含量:对高铁含量铝铜合金组织演变及力学性能的影响。结果表明:当Si含量低于1.0%时,Al-6.5Cu-0.6Mn-0.5Fe合金的常温力学性能稍有降低,这主要是由于组织演变的综合作用,包括纳米及α-Fe相的增多,晶粒的粗化以及晶界处Al2Cu相的增多;当Si含量为1.5%时,Al-6.5Cu-0.6Mn-0.5Fe合金性能急剧下降,这主要是由于多余Si粒子的析出导致第二相产生偏聚。
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| 关 键 词： | 铝铜合金 富铁金属间化合物 SI 拉伸性能 |
Microstructure evolution and mechanical properties of Al-6.5Cu-0.6Mn-0.5Fe alloys with different Si additions |
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| Rui XU,Bo LIN,Hao-yu LI,Hua-qiang XIAO,Yu-liang ZHAO,Wei-wen ZHANG.Microstructure evolution and mechanical properties of Al-6.5Cu-0.6Mn-0.5Fe alloys with different Si additions[J].Transactions of Nonferrous Metals Society of China,2019(8):1583-1591. |
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| Authors: | Rui XU Bo LIN Hao-yu LI Hua-qiang XIAO Yu-liang ZHAO Wei-wen ZHANG |
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| Affiliation: | (School of Mechanical Engineering, Guizhou University, Guiyang 550025, China;School of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, China;School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China) |
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| Abstract: | The effect of Si content on the microstructures and mechanical properties of the heat-treated Al-6.5 Cu-0.6 Mn-0.5 Fe alloy was investigated using image analysis,scanning electron microscopy(SEM),transmission electron microscopy(TEM),and tensile testing.The results show that the mechanical properties of Al-6.5 Cu-0.6 Mn-0.5 Fe alloys decrease slightly when the Si content is below 1.0%.This can be attributed to the comprehensive effect of microstructure evolution,including the increase of nano-sized α-Fe,the coarsened grain size,and an increase in Al2 Cu content at the grain boundary.When the Si content is 1.5%,the mechanical properties of the Al-6.5 Cu-0.6 Mn-0.5 Fe alloys decrease significantly,and this can be attributed to the agglomerated second intermetallics,which is resulted from the formation of excess Si particles. |
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| Keywords: | Al-Cu alloys iron-rich intermetallics Si tensile properties |
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