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首页> 外文期刊>Journal of Materials Engineering and Performance >Corrosion Behavior of Aluminum-Steel Weld-Brazing Joint
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Corrosion Behavior of Aluminum-Steel Weld-Brazing Joint

机译：铝钢焊接钎焊接头的腐蚀行为

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摘要

Dissimilar metals of 1060 aluminum and galvanized steel were joined with a lap joint by pulsed double-electrode gas metal arc weld brazing with aluminum-magnesium and aluminum-silicon filler metals. The corrosion behavior of the weld joints was investigated with immersion corrosion and electrochemical corrosion tests, and the corrosion morphology of the joints was analyzed with scanning electron microscopy (SEM). Galvanic corrosion was found to occur when the samples were immersed in corrosive media, and the corrosion rate of joints was increased with increased heat input of the workpiece. Comparison of the corrosion properties of weld joints with different filler wires indicated that the corrosion rate of weld joints with aluminum-silicon filler wire was larger than that of weld joints with aluminum-magnesium filler wire. Results also showed that the zinc-rich zone of weld joints was prone to corrosion. The corrosion behavior of zinc-rich zone was analyzed with SEM equipped with an energy-dispersive x-ray spectroscopy analysis system based on the test results.
机译：将1060铝和镀锌钢的异种金属通过搭接接头与铝镁和铝硅填充金属进行脉冲双极气体保护金属电弧焊钎焊。通过浸没腐蚀和电化学腐蚀试验研究了焊缝的腐蚀行为，并用扫描电子显微镜（SEM）分析了焊缝的腐蚀形态。当将样品浸入腐蚀性介质中时，会发现电偶腐蚀，并且随着工件热量输入的增加，接头的腐蚀速率也会增加。通过对不同填充焊丝的焊接接头腐蚀性能的比较表明，铝硅填充焊丝的焊接接头的腐蚀速率大于铝镁填充焊丝的焊接接头的腐蚀速率。结果还表明，焊缝的富锌区容易腐蚀。根据测试结果，使用配备了能量色散X射线光谱分析系统的SEM分析富锌区的腐蚀行为。

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