| 固溶时效处理对Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr合金组织性能的影响 |
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| 引用本文： | 刚建伟,韩小磊,李志辉,朱宝宏,张永安.固溶时效处理对Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr合金组织性能的影响[J].稀有金属,2012,36(4):523-528. |
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| 作者姓名： | 刚建伟 韩小磊 李志辉 朱宝宏 张永安 |
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| 作者单位： | 1. 东北轻合金有限责任公司,黑龙江哈尔滨,150060
2. 北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京,100088 |
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| 基金项目： | 国家"973"计划项目课题，国家自然科学基金项目资助，国际科技合作项目资助 |
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| 摘 要： | 采用光学显微镜、扫描电镜、透射电镜、X射线衍射、硬度测试、电导率测试和室温拉伸性能测试等分析手段,研究了Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr合金挤压板带固溶、单级时效和双级时效制度下的组织和性能。研究表明,Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr合金挤压板带采用475℃/2 h的固溶处理制度,析出相回溶充分,无过烧现象;合金采用475℃/2 h+120℃/24 h的T6时效处理制度,晶内析出相细小弥散,晶界析出相连续分布;合金采用475℃/2 h+110℃/8 h+160℃/28 h的T74双级固溶时效处理制度,晶内析出相以η’和η为主,晶界析出物完全断开。
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| 关 键 词： | Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr铝合金 力学性能 微观组织 固溶处理 时效处理 |
Solution and Aging Treatment of Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr Aluminum Alloy |
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| Gang Jianwei
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Han Xiaolei
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Li Zhihui
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Zhu Baohong
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Zhang Yongan.Solution and Aging Treatment of Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr Aluminum Alloy[J].Chinese Journal of Rare Metals,2012,36(4):523-528. |
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| Authors: | Gang Jianwei Han Xiaolei Li Zhihui Zhu Baohong Zhang Yongan |
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| Affiliation: | 1.Northeast Light Alloy Co.,Ltd.,Harbin 150060,China;2.State Key Laboratory of Nonferrous Metals and Processes,General Research Institute for Nonferrous Metals,Beijing 100088,China) |
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| Abstract: | The microstructure and properties of Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr alloy extruded plates in solution,single-aging,two-step aging condition were studied by means of OM,SEM,TEM,XRD,hardness measurement test,electrical conductivity test and tensile test.The results showed that 475 ℃/2 h was appropriate solution treatment for the Al-6.6Zn-2.3Mg-2.1Cu-0.12Zr alloy extruded plate.By this solution,precipitated phase dissolves adequately with no overheat appearing.By T6 solution and aging treatment of 475 ℃/2 h+120 ℃/24 h,the precipitates in the matrix of the alloy are fine and disperse,and the precipitates on the grain boundary distribute continuously.By T74 two-step solution and aging treatment of 475 ℃/2 h+110 ℃/8 h+160 ℃/28 h,most matrix precipitates are η′ and η,and the precipitates on the grain boundary disconnect completely. |
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| Keywords: | Al-6 6Zn-2 3Mg-2 1Cu-0 12Zr aluminum alloy mechanical property microstructure solution treatment aging treatment |
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