超高强7000系铝合金的淬火敏感性Quench sensitivity of ultrahigh strength 7000 series aluminum alloys

对7000 系铝合金的淬火敏感性研究情况进行了回顾，探讨了淬火敏感性机理，总结了淬火敏感性的评价方法，从合金的化学成分、微观组织和制备工艺角度分析了影响淬火敏感性的因素，指出了设计和调整合金成分、精细调控微观组织是降低淬火敏感性的可能途径，介绍了预测合金性能的淬火因子分析方法(QFA)，并据此提出淬火敏感区间快冷、高低温区间慢冷的淬火工艺可保证合金高力学性能和低残余应力。

The investigations on quench sensitivity of 7000 series aluminum alloys were reviewed. The mechanism for quench sensitivity was discussed. The methods to evaluate quench sensitivity were summarized. The influencing factors on quench sensitivity were discussed from chemical compositions, microstructure and processing parameters. It was supposed that it is probable to decrease the quench sensitivity by designing and adjusting alloy compositions and controlling microstructure precisely. The quench factor analysis method that can be used to predict properties was introduced, and the optimal quenching process of rapid cooling through critical temperature range and slow cooling in the high and low temperature range was suggested to obtain high mechanical properties and low residual stress.

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