Al-Zn-Mg-(Cu)合金抗应力腐蚀性能影响因素分析  

Effect of Different Factors on the Stress Corrosion Cracking of Al-Zn-Mg-(Cu)Alloys

作　　者：舒文祥[1] 郭明星[1] 侯陇刚[1] 崔华[2] 庄林忠[1] 张济山[1] 

机构地区：[1]北京科技大学新金属材料国家重点实验室,北京100083 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料导报》2013年第13期1-9,19,共10页Materials Reports

基　　金：中央高校基本科研基金(FRF-TD-12-001)

摘　　要：从合金成分、热处理制度以及显微组织特征等方面对如何提高7xxx系铝合金抗应力腐蚀性能进行了系统的分析,重点阐述了影响合金抗应力腐蚀性能的本质因素——GBP、MPT、PFZ、晶界原子偏聚等。同时提出了合理可行的提高7xxx系铝合金抗应力腐蚀性能的解决途径,为新一代超高强铝合金的成分设计和工艺优化提供了重要的参考。The effects of alloy compositions, heat treatments and microstructures on the stress corrosion resis- tance of 7xxx alloys are systematically summarized and analyzed. The inherent factors that affect the stress corrosion resistance-GBP, MPT, PFZ and grain boundary atom segregation have been especially elaborated. And some approa- ches to improve the stress corrosion resistance were put forward that should lead to further improvement in designing of new alloy composition and processing for advanced high strength 7xxx alloys.

关 键 词：超高强铝合金 热处理 抗应力腐蚀 

分 类 号：TG146.2[一般工业技术—材料科学与工程]