3种典型Al-Si-Cu系压铸铝合金耐腐蚀性能研究  

Research on Corrosion Resistance of Al-Si-Cu Die Casting Aluminum Alloys

作　　者：张鑫 李伟 乔小兵 谢文才[1] 周胜蓝 王保男 Zhang Xin;Li Wei;Qiao Xiaobing;Xie Wencai;Zhou Shenglan;Wang Baonan(Commercial Vehicle Development Institute,FAW Jiefang Automobile Co.,Ltd.,Changchun 130011)

机构地区：[1]一汽解放汽车有限公司商用车开发院,长春130011

出　　处：《汽车工艺与材料》2022年第5期7-12,共6页Automobile Technology & Material

摘　　要：采用中性盐雾试验方法,研究了A380、YL113、YL112 3种压铸铝合金的耐腐蚀性,探讨了3种合金在不同中性盐雾腐蚀时间下的腐蚀形貌、典型腐蚀深度、腐蚀产物及力学性能变化。结果表明,A380、YL113、YL112压铸试棒随中性盐雾测试时间的延长,抗拉强度也随之线性下降;中性盐雾测试504 h后,A380、YL113、YL112压铸试棒抗拉强度较试验前分别降低31%、14%、8%;3种压铸铝合金的耐蚀性主要与材料中的Cu、Zn元素含量有关。This paper studies corrosion resistance of A380, YL113 and YL112 die-casting aluminum alloys by neutral salt spray test, and discusses corrosion morphology, typical corrosion depth, corrosion products and mechanical properties changes of the die-casting aluminum alloys under different neutral salt spray corrosion times. The results show that the tensile strength of A380, YL113 and YL112 die-casting samples decreases linearly with the extension of neutral salt spray test time. After 504 h neutral salt spray test, the tensile strength of the above 3 die-casting samples decreases by 31%, 14% and 8% respectively. The corrosion resistance of these die-casting aluminum alloys are mainly related with the content of Cu and Zn in the alloys.

关 键 词：铝合金 压力铸造 晶间腐蚀 耐腐蚀性 

分 类 号：U465.2[一般工业技术—材料科学与工程]