| 6005A铝合金焊接接头的腐蚀行为 |
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| 引用本文： | 巩发彤,傅成骏,覃作祥.6005A铝合金焊接接头的腐蚀行为[J].大连铁道学院学报,2009(2):66-69. |
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| 作者姓名： | 巩发彤 傅成骏 覃作祥 |
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| 作者单位： | 大连交通大学材料科学与工程学院;中国南车集团株洲电力机车有限公司; |
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| 摘 要： | 采用浸泡试验和电化学方法研究了6005A铝合金焊接接头在不同介质环境中的腐蚀行为，采用光学显微镜、扫描电子显微镜、电子能谱分析了焊缝微观组织和成分的变化．结果表明，由于ER5356焊丝Mg含量较高，致使焊缝中Mg含量高于母材，因此焊缝耐蚀性能低于母材；在浸泡试验中焊缝发生均匀腐蚀，表面呈多孔形貌，其对光线的反射明显弱于仅发生点蚀的母材，表现出焊缝发黑的现象；焊接接头在0．1MNaCl、0．1MNa2SO4和0．1MNaNO3溶液中的腐蚀速度为VNaCl〉VNa2SO4〉VNaNO3.
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| 关 键 词： | 6005A 焊接接头 腐蚀行为 |
Corrosion Behavior of Aluminum Alloy 6005A Welding Joint |
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| GONG Fa-tong,FU Cheng-jun,QIN Zuo-xiang.Corrosion Behavior of Aluminum Alloy 6005A Welding Joint[J].Journal of Dalian Railway Institute,2009(2):66-69. |
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| Authors: | GONG Fa-tong FU Cheng-jun QIN Zuo-xiang |
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| Institution: | GONG Fa-tong1,FU Cheng-jun2,QIN Zuo-xiang1(1.School of Materials Science , Engineering,Dalian Jiaotong University,Dalian 116028,China,2.CSR Zhuzhou Electric Locomotive Co.,ltd.,Zhuzhou 412001,China) |
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| Abstract: | Immersion test and electrochemical methods were used to study the corrosion behavior of a 6005A aluminum alloy welding joints in different environment,the change in microstructures and compositions of the welding joints were analyzed by optical microscopy,scanning electron microscopy,electron dispersive X-ray spectroscopy.The results show that the high Mg content in the weld originated from the welding wire ER5356 is the main reason of lower corrosion resistance in the weld compared with the base metal.Unif... |
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| Keywords: | 6005A welding joint corrosion behavior |
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