铝合金型材是飞机最重要的结构材料。早在五十年代人们就发现铝合金型材在大气条件下,特别是在海洋气氛中很容易产生剥蚀,我国航空工业中也曾发生过铝合金的剥蚀问题。剥蚀造成铝合金构件机械性能大幅度下降,剥蚀发生的地方往往是优先产生疲劳开裂的位 Aluminum profiles are the most important structural materials for aircraft. As early as the 1950s, people discovered that aluminum alloy profiles are easily denuded under atmospheric conditions, especially in the marine atmosphere. The problem of aluminum alloy erosion has also occurred in China’s aviation industry. Decreasing the mechanical properties of aluminum alloy components significantly decreased, where erosion occurs often give priority to the fatigue cracked bit