自然时效是指将工件放在室外等自然条件下,使工件内部应力自然释放从而使残余应力消除或减少。自然时效是最古老的时效方法。它是把构件露天放置于室外,依靠大自然的力量,经过几个月至几年的风吹、 日晒、雨淋和季节的温度变化,给构件多次造成反复的温度应力。在温度应力形成的过载下,促使残余应力发生松弛而使尺寸精度获得稳定。
自然时效对Al-Zn-Mg-Cu合金淬火敏感性的影响 - 中南大学学报(自然科学版、英文版) 关键字: Al-Zn-Mg-Cu合金;淬火敏感性;自然时效[gap=1502]Key words: Al-Zn-Mg-Cu alloy; quench sensitivity; natural aging
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提供了实验结果,并对自然时效的机制进行了研究。
In this paper, the results of experiments were provided, the micro-mechanisms of natural ageing were studied.
经固溶处理和自然时效的铝铜合金可以进行硬质阳极氧化。
Hard anodizing film could be obtained on Al-Cu alloy surface which had been treated with solid solution treatment and natural aging.
通过固溶处理后自然时效,能有效地提高合金的综合力学性能。
The results showed that natural ageing after solution heat treatment led to increase the comprehensive mechanical properties effectively.
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