根据升温差热扫描量热分析( DSC)曲线,对Al-Zn-Mg-Cu系合金的时效过程进行了动力学分析,并利用Ozawa、Takor、Kissinger和Starink方法计算出GP区、η′相、平衡相η的激活能分别为:50、122、90 kJ/mol,这表明GP区的形成主要与Mg原子的迁移相关；η′相的形成是Mg和Zn原子共同迁移的结果,主要与Zn原子的迁移相关.
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