预腐蚀温度对铝合金LY12CZ腐蚀损伤及疲劳性能的影响  

EFFECT OF PRE-CORROSION TEMPERATURE ON CORROSION DAMAGE AND FATIGUE PERFORMANCE OF ALUMINUM ALLOY LY12CZ

作　　者：张有宏[1] 吕国志[2] 常新龙[1] 李仲[2] 陈跃良[3] 

机构地区：[1]第二炮兵工程学院,西安710025 [2]西北工业大学航空学院,西安710072 [3]海军航空工程学院青岛分院,青岛266041

出　　处：《腐蚀科学与防护技术》2008年第4期250-252,共3页Corrosion Science and Protection Technology

基　　金：黄玉珊先生基金部分资助

摘　　要：根据ASTMG34-1标准对铝合金LY12CZ实验件进行了剥蚀实验.研究了预腐蚀温度对铝合金试验件腐蚀损伤形貌的影响,并分析了预腐蚀温度对试验件疲劳寿命的影响.利用试验测量得到的表面腐蚀损伤度数据,建立了不同腐蚀温度下损伤度演化的概率模型,并对其演化过程的特征进行了讨论.最后推导出了温度影响下腐蚀损伤度的预测模型。Exfoliation tests for LY12 CZ aluminum alloy specimens were performed in accordance with ASTM G34 -1 and the surface corrosion damage configuration was investigated in corrosive environments at different temperatures and the effect of temperature for preorrosion on fatigue lives was also discussed. Based on the measured data sets of the surface corrosion damage ratio, the probabilistic model of corrosion damage ratio at different temperature was presented and the characteristic of evolution process was discussed. A mathematical model of the effect of pre-corrosion temperature on the corrosion damage ratio was p Keywords roposed and the predicted results were in good agreement with experimental data.

关 键 词：预腐蚀温度 损伤度 疲劳寿命 统计分析 演化模型 

分 类 号：V216.5[航空宇航科学与技术—航空宇航推进理论与工程] O212.1[理学—概率论与数理统计]