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含Li的Al-Zn-Mg-Cu合金沉淀析出過(guò)程的定量分析
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TG113.12 TG115.221

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國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展規(guī)劃資助項(xiàng)目(G19990649)


Quantitative Analysis of Precipitation in a Li Containing Al-Zn-Mg-Cu Alloy
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    摘要:

    應(yīng)用小角度X射線散射技術(shù)結(jié)合TEM分析定量的描述Al-Zn-Mg-Cu-Li合金時(shí)效過(guò)程中析出相尺寸分布和形貌等信息。通過(guò)分析確定合金在幾種時(shí)效狀態(tài)下析出相為軸比在0．2～0．4之間的扁回轉(zhuǎn)橢球形。確定了析出相特征尺寸的對(duì)數(shù)正態(tài)分布和質(zhì)量依回轉(zhuǎn)半徑的Maxwell分布。并分析分布曲線隨動(dòng)力強(qiáng)度Ks的變化特征，可以看出，析出相尺寸和質(zhì)量分布曲線基本滿足隨動(dòng)力強(qiáng)度增加，幾何平均值增加，分布范圍變寬。

    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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杜志偉 周鐵濤 劉培英 董寶中 陳昌麒.含Li的Al-Zn-Mg-Cu合金沉淀析出過(guò)程的定量分析[J].稀有金屬材料與工程,2005,34(2):184~188.[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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  • 最后修改日期:2003-06-20
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