5%NaCl盐雾环境对铝合金铆接防护结构性能影响研究  

Influence of 5% NaCl Salt Spray Environment on the Performance of Aluminum Alloy Riveted Protection Structure

作　　者：韩允 赵连红 张红飞 叶远珩 刘成臣 刘元海 王浩伟 HAN Yun;ZHAO Lian-hong;ZHANG Hong-fei;YE Yuan-heng;LIU Cheng-chen;LIU Yuan-hai;WANG Hao-wei(Naval Equipment Department Wuyhan Bureau of Military Representatlie,Wuhan 430080,China;Key Laboratory of Structure Corrosion Protection and Control of Aviation Science and Technology,China Special Vehicle Research Institute,Jingmen 448035,China)

机构地区：[1]海装武汉局业务处,武汉430080 [2]中国特种飞行器研究所结构腐蚀防护与控制航空科技重点实验室,湖北荆门448035

出　　处：《装备环境工程》2019年第11期51-55,共5页Equipment Environmental Engineering

摘　　要：目的研究2024铝合金在5%NaCl盐雾环境下的腐蚀疲劳性能。方法开展2024铝合金5%NaCl盐雾环境下的腐蚀疲劳试验,采用"疲劳加载-腐蚀环境"交替循环的试验模式,通过试验测试铝合金铆接结构在5%NaCl盐雾环境下的腐蚀疲劳寿命值,分析不同疲劳载荷大小对铝合金连接结构的腐蚀疲劳寿命影响。结果5%NaCl盐雾环境对于铝合金铆接结构疲劳寿命有较大影响,疲劳载荷对防护涂层防护性能和腐蚀疲劳载荷的滞后效应等两方面影响,0.25P破坏载荷相较于0.3P破坏载荷,涂层防护作用影响更小,低载锻炼效应更强,腐蚀疲劳寿命降低量更少。结论2024铝合金铆接结构耐腐蚀性能与结构载荷和防护涂层特性有重要关系。Objective To study corrosion fatigue properties of 2024 aluminum alloy in 5%NaCl salt spray environment.Methods Corrosion fatigue test of 2024 aluminum alloy was carried out in in 5%NaCl salt spray environment.The test mode of"corrosive environment-fatigue loading"alternate cycle was applied to get the corrosion fatigue life value of aluminum alloy riveted structure in 5%NaCl salt spray environment and analyze the influences of different fatigue loads on corrosion fatigue life of aluminum alloy joint structure.Results 5%NaCl salt spray environment had a great impact on the fatigue life of aluminum alloy joint structure.The effect of fatigue load was reflected in the protective performance of protective coating and the hysteresis effect of corrosion fatigue load.Compared with 0.3 Pdamage load,the coating protection of 0.25 Pfailure load had less effect,stronger low load exercise effect and less corrosion fatigue life reduction Conclusion The corrosion resistance of the 2024 aluminum alloy riveted structure is close related to the structural load and protective coating properties.

关 键 词：2024铝合金 铆接结构 5%NaCl盐雾环境 腐蚀疲劳寿命 

分 类 号：TG172.5[金属学及工艺—金属表面处理]