ZL205A铸造铝合金材料在海洋环境下的腐蚀断裂分析

Analysis on Corrosion Fracture of Cast Aluminum Alloy Material ZL205A in Condition of Marine Environment

ZL205A高强度铸造铝合金因其良好的机械性和加工性得到广泛应用。但近年来,ZL205A铸造铝合金在户外海洋性恶劣气候环境中抗腐蚀能力差的问题逐渐出现。通过对某舰载装备上ZL205A铸造铝合金受力结构发生腐蚀断裂的介绍,分析了装备产生故障的原因和机理,以为故障排除和优化提供依据。

High strength cast aluminum alloy ZL205A was widely used.due to its better mechanical properties and machinability. But in recent years, the problems of the bad corrosion resistance of cast aluminum alloy ZL205A appear in the condition of marine outdoor. By introducing the corrosion crack of forced structure of cast aluminum alloy ZL205A inside the shipbome equipment, the reasons and mechanisms for the appearance of the failure of the equipment were analyzed, which can provide basis for handling the failure problems and optimizing.