铝合金试件腐蚀深度分布特性及变化规律研究

Investigation on Distribution and Variable Rule for Corrosion Depth of Aluminum Alloy Specimen

以飞机蒙皮结构常用材料LY1 2CZ铝合金模拟试件的试验室加速腐蚀和大气暴露腐蚀试验结果为依据 ,用腐蚀深度对腐蚀损伤程度进行了描述 ,对腐蚀深度进行了测量 ;给出了一定腐蚀时间下腐蚀深度的分布特性 ,对腐蚀深度分散性及腐蚀深度随时间的变化规律进行了研究 ;并得到了加速腐蚀与大气暴露试验的当量加速关系 .

Based on the experiment for LY12CZ aluminum alloy stimulator specimen under the typical service atmosphere and accelerated simulator environment in laboratory,which is usually used in making aircraft skin structures,the viewpoint of corrosion damage can be described by the corrosion depth is clarified and the corrosion depth is measured.The distribution function of the corrosion depth is given,the dispersity of the corrosion depth and relationship between the corrosion depth and the corrosion time are studied.And the corrosion equivalent relationship under these two environments is determined by contrasting the corrosion depth.