| 含Li的Al-Zn-Mg-Cu合金沉淀析出过程的定量分析 |
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| 引用本文： | 杜志伟 周铁涛 刘培英 董宝中 陈昌麒. 含Li的Al-Zn-Mg-Cu合金沉淀析出过程的定量分析[J]. 稀有金属材料与工程, 2005, 34(2): 184-188 |
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| 作者姓名： | 杜志伟 周铁涛 刘培英 董宝中 陈昌麒 |
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| 作者单位： | 北京航空航天大学,北京,100083;中国科学院高能物理研究所,北京,100039 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(G19990649) |
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| 摘 要： | 应用小角度X射线散射技术结合TEM分析定量的描述Al-Zn-Mg-Cu-Li合金时效过程中析出相尺寸分布和形貌等信息。通过分析确定合金在几种时效状态下析出相为轴比在0．2～0．4之间的扁回转椭球形。确定了析出相特征尺寸的对数正态分布和质量依回转半径的Maxwell分布。并分析分布曲线随动力强度Ks的变化特征，可以看出，析出相尺寸和质量分布曲线基本满足随动力强度增加，几何平均值增加，分布范围变宽。
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| 关 键 词： | Al-Zn-Mg-Cu-Li合金 析出相 尺寸分布 形貌 小角度X射线散射 |
| 文章编号： | 1002-185X(2005)02-0184-05 |
| 修稿时间： | 2003-06-20 |
Quantitative Analysis of Precipitation in a Li Containing Al-Zn-Mg-Cu Alloy |
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| Du Zhiwei,Zhou Tietao,Liu Peiying,Dong Baozhong,Chen Changqi. Quantitative Analysis of Precipitation in a Li Containing Al-Zn-Mg-Cu Alloy[J]. Rare Metal Materials and Engineering, 2005, 34(2): 184-188 |
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| Authors: | Du Zhiwei Zhou Tietao Liu Peiying Dong Baozhong Chen Changqi |
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| Abstract: | The precipitates size distribution and morphology in an Al-Zn-Mg-Cu-Li alloy are studied by small angle X-ray scattering and transmission electron microscopy. The results show that the precipitates belong to ellipsoid and their axis ratio range is between 0.2 and 0.4, aged under different conditions. The logarithm Gaussian distribution of effective size and the Maxwell distribution of particles mass with gyration radius are also constructed. The changing of both types of distribution curves with kinetic strength Ks has been analyzed.. The results show that the geometric average and distribution width for both types of distribution curves increase with kinetic strength. |
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| Keywords: | Al-Zn-Mg-Cu-Li alloys precipitates size distribution morphology small angle X-ray scattering |
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