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热处理对冷轧铜铝复合板材界面扩散层结构的影响*

Keywords: 金属材料,铜铝复合板,热处理,扩散层,金属间化合物

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Abstract:

?用sem、tem、微区xrd等手段分析了复合板界面扩散层的形貌和结构,研究了热处理工艺对冷轧铜铝复合板材界面扩散层结构的影响,讨论界面扩散层形成规律。研究表明,冷轧铜铝复合板经过扩散热处理后,在复合界面形成具有扩散性质的界面层,随着热处理时间的延续,界面扩散层由最初的单层逐渐生长为三层,进一步延长热处理时间,界面层的层数不变,厚度略有增加;界面层含有q(al2cu)相、h2(alcu)相和g2(al4cu9)相等金属间化合物;界面扩散层结构为:铝侧的al-cu固溶体与q(al2cu)相复合层、h2(alcu)相层和铜侧的cu-al固溶体与g2(al4cu9)相复合层。

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