| Al-Zn-Mg-Cu-Zr-0.5Er合金在铸态和均匀化条件下的组织(英文) |
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| 引用本文： | 王少华,孟令刚,杨守杰,房灿峰,郝海,戴圣龙,张兴国. Al-Zn-Mg-Cu-Zr-0.5Er合金在铸态和均匀化条件下的组织(英文)[J]. 中国有色金属学会会刊, 2011, 0(7): 1449-1454 |
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| 作者姓名： | 王少华 孟令刚 杨守杰 房灿峰 郝海 戴圣龙 张兴国 |
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| 作者单位： | 大连理工大学材料科学与工程学院;北京航空材料研究院; |
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| 基金项目： | Project(50875031) supported by the National Natural Science Foundation of China; Project(2005CB623705) supported by National Basic Research Program of China |
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| 摘 要： | 采用普通半连续铸造技术(DCC)制备了Al-Zn-Mg-Cu-Zr和Al-Zn-Mg-Cu-Zr-0.5Er合金,研究了微量元素Er对Al-Zn-Mg-Cu-Zr合金铸态和均匀化态组织的影响。结果表明:添加0.5%Er后,合金的晶粒尺寸增大且为粗大的树枝晶。在合金凝固过程中,大部分元素Er在晶界处形成三元合金相Al8Cu4Er。经过均匀化处理后,两种合金晶界处的MgZn2相几乎全部回溶。但是在含Er合金中,由于Al8Cu4Er相的回溶温度约为575℃,所以均匀化处理不能有效地消除Al8Cu4Er相。
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| 关 键 词： | Al-Zn-Mg-Cu-Zr合金 铒 Al8Cu4Er相 均匀化 显微组织 |
Microstructure of Al-Zn-Mg-Cu-Zr-0.5Er alloy under as-cast and homogenization conditions |
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| WANG Shao-hua,MENG Ling-gang,YANG Shou-jie,FANG Can-feng,HAO Hai,DAI Sheng-long,ZHANG Xing-guo .School of Materials Science , Engineering,Dalian University of Technology,Dalian ,China. Microstructure of Al-Zn-Mg-Cu-Zr-0.5Er alloy under as-cast and homogenization conditions[J]. Transactions of Nonferrous Metals Society of China, 2011, 0(7): 1449-1454 |
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| Authors: | WANG Shao-hua MENG Ling-gang YANG Shou-jie FANG Can-feng HAO Hai DAI Sheng-long ZHANG Xing-guo .School of Materials Science Engineering Dalian University of Technology Dalian China |
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| Affiliation: | WANG Shao-hua1,MENG Ling-gang1,YANG Shou-jie2,FANG Can-feng1,HAO Hai1,DAI Sheng-long2,ZHANG Xing-guo1 1.School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China,2.Beijing Institute of Aeronautical Materials,Beijing 100095 |
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| Abstract: | The billets of Al-Zn-Mg-Cu-Zr and Al-Zn-Mg-Cu-Zr-0.5Er alloys were prepared by semi-continuous direct chill casting (DCC).The effects of trace Er on microstructure of Al-Zn-Mg-Cu-Zr alloy under as-cast and homogenization conditions were studied.The results show that the grain morphology is large dendritic structure and the grain size increases obviously by the addition of 0.5% Er.Moreover,most of Er element in the alloy segregates at grain boundary during solidification,resulting in ternary Al8Cu4Er phase.A... |
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| Keywords: | Al-Zn-Mg-Cu-Zr alloy Er Al8Cu4Er phase homogenization microstructure |
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