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为了改善 Al-Zn-Mg 合金组织的均匀性,提高其机械性能,改善合金的抗应力及抗剥落腐蚀,近廿年来,在分级时效工艺方面进行了不少研究,取得了很好的效果。
In order to improve the homogeneity of Al-Zn-Mg alloy, improve the mechanical properties and improve the anti-stress and anti-spalling corrosion resistance of the Al-Zn-Mg alloy, many researches have been done on the grading aging process in recent twenty years and good results have been achieved.