超高強7000系鋁合金的淬火敏感性Quench sensitivity of ultrahigh strength 7000 series aluminum alloys

對7000 系鋁合金的淬火敏感性研究情況進行了回顧，探討了淬火敏感性機理，總結(jié)了淬火敏感性的評價方法，從合金的化學成分、微觀組織和制備工藝角度分析了影響淬火敏感性的因素，指出了設(shè)計和調(diào)整合金成分、精細調(diào)控微觀組織是降低淬火敏感性的可能途徑，介紹了預(yù)測合金性能的淬火因子分析方法(QFA)，并據(jù)此提出淬火敏感區(qū)間快冷、高低溫區(qū)間慢冷的淬火工藝可保證合金高力學性能和低殘余應(yīng)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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