| 7150铝合金时效时晶界析出行为的研究 |
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| 引用本文： | 任硕,陈江华,刘吉梓,方磊,刘萍,明文全,伍翠兰. 7150铝合金时效时晶界析出行为的研究[J]. 电子显微学报, 2011, 0(Z1) |
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| 作者姓名： | 任硕 陈江华 刘吉梓 方磊 刘萍 明文全 伍翠兰 |
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| 作者单位： | 湖南大学材料科学与工程学院高分辨电镜中心; |
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| 基金项目： | 国家自然科学基金资助项目(50771043); 国家基础研究计划资助项目(No.2008CB617608和No.2009CB623704) |
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| 摘 要： | 本文采用透射电子显微镜(TEM)、能谱分析(EDAX)对人工时效条件下晶界无析出带(PFZ)的演变规律进行研究。实验选用同一投影方向测量PFZ的宽度,结果表明PFZ的宽度对时效温度的敏感性远远高于对时效时间的敏感性。时效温度越高PFZ越宽,而在同一时效温度下PFZ的宽度并不随时效时间的延长而宽化。PFZ的宽度与相邻两个晶粒之间的取向差有关系,在相同处理条件下,小角度晶界附近PFZ宽度小于大角晶界。能谱分析显示PFZ内为贫溶质原子区,Zn元素缺失尤为明显。
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| 关 键 词： | 铝合金 晶界无析出带 析出相 STEM 能谱分析 |
Study on the precipitation behaviors at grain boundaries in 7150 aluminum alloys upon thermal aging |
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| REN Shuo,CHEN Jiang-hua,LIU Ji-zi,FANG Lei,LIU Ping,MING Wen-quan,WU Cui-lan. Study on the precipitation behaviors at grain boundaries in 7150 aluminum alloys upon thermal aging[J]. Journal of Chinese Electron Microscopy Society, 2011, 0(Z1) |
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| Authors: | REN Shuo CHEN Jiang-hua LIU Ji-zi FANG Lei LIU Ping MING Wen-quan WU Cui-lan |
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| Affiliation: | REN Shuo,CHEN Jiang-hua,LIU Ji-zi,FANG Lei,LIU Ping,MING Wen-quan,WU Cui-lan(Center for High-Resolution Electron Microscopy of College of Materials Science and Engineering,Hunan University,Changsha Hunan 410082,China) |
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| Abstract: | The evolution of the precipitate free zones(PFZs) during artificial ageing,and the associated mechanical properties of 7150 Al alloy,have been investigated by means of transmission electron microscopy(TEM),scanning transmission electron microscopy(STEM) and energy dispersive x-ray(EDS) analysis.A method for measuring the width of the PFZs has been proposed in order to observe the evolution of PFZs.It was found that the higher the aging temperature,the wider the formed PFZs.The ageing time has no significant... |
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| Keywords: | aluminum alloy precipitates free zone precipitates transmission electron microscopy energy dispersive X-ray analysis |
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