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微量Ag，Mg對(duì)Al-Cu-Li合金時(shí)效特性和顯微組織的影響
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TG146.2

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Effect of Ag, Mg on Ageing Characteristics and Microstructure of Al-Cu-Li Alloy
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    摘要:

    研究了微量Ag，Mg對(duì)Al—Cu—Li合金顯微組織和時(shí)效特性的影響。結(jié)果表明：?jiǎn)为?dú)加Ag對(duì)Al—Cu—Li系2197合金的固溶強(qiáng)化效果很小，但有較強(qiáng)的時(shí)效強(qiáng)化作用，Ag含量不同，時(shí)效強(qiáng)化效果也不同；Ag，Mg共同加入提高了Tl相（Al2CuLi）的析出速率和析出密度，使合金具有較大的固溶強(qiáng)化效果及最強(qiáng)烈的時(shí)效響應(yīng)和時(shí)效強(qiáng)化效果。Ag，Mg的添加對(duì)合金的不同影響可通過溶質(zhì)原子與空位、溶質(zhì)原子與溶質(zhì)原子之間的相互作用來解釋。

    Abstract:

    The effect of Ag, Mg on microstructure and ageing characteristics of Al-Cu-L(i2197)alloy has been studied. Independent small addition of Ag to the alloy enhances peakaging strength to a larger extent and the different aging-strengthening effect is accompanied by the different concentration of Ag. 2197 alloy has the largest solution-strengthening effect and the strongest aging response and aging- strengthening effect by the combined addition of Ag and Mg. Independent and combined roles of small addition Ag and Mg can be interpreted in terms of the solute-vacance interaction and solute-solute atom interaction.

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黃蘭萍 陳康華 鄭子樵 黃永平.微量Ag，Mg對(duì)Al-Cu-Li合金時(shí)效特性和顯微組織的影響[J].稀有金屬材料與工程,2005,34(8):1322~1325.[Huang LanPing;Chen KangHua;Zheng ZiQiao;Huang YongPing. Effect of Ag, Mg on Ageing Characteristics and Microstructure of Al-Cu-Li Alloy[J]. Rare Metal Materials and Engineering,2005,34(8):1322~1325.]
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  • 收稿日期:2004-03-16
  • 最后修改日期:2005-03-07
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