(1. 中南大學(xué) 材料科學(xué)與工程學(xué)院，長沙 410083；
2. 中南大學(xué) 教育部有色金屬材料科學(xué)與工程重點(diǎn)實(shí)驗(yàn)室，長沙 410083)
摘 要: 對7000系鋁合金的淬火敏感性研究情況進(jìn)行了回顧，探討了淬火敏感性機(jī)理，總結(jié)了淬火敏感性的評價(jià)方法，從合金的化學(xué)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(jì)和調(diào)整合金成分、精細(xì)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(xué)性能和低殘余應(yīng)力。
關(guān)鍵字: 7000系鋁合金；淬火敏感性；時(shí)間—溫度—性能曲線；末端淬火；淬火因子分析方法
（1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. Key Laboratory of Nonferrous Metals Materials, Ministry of Education, Central South University）
Abstract: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.
Key words: 7000 series aluminum alloys; quench sensitivity; time—temperature—property (TTP) curve; end quenching; quench factor analysis
