通过光学显微镜、扫描电子显微镜(SEM)和X射线衍射仪(XRD)研究了Cu对7XXX系铝合金在30％、60％、90％变形量变形时再结晶的影响.研究发现:随着Cu含量在0 ～ 1.6wt％范围内增加时,合金经轧制后粗大的第二相数量明显增加,这些粗大相在固溶过程中促进合金再结晶形核,Cu含量增加,合金的再结晶分数增大;变形量增大,合金再结晶分数也增大.
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